Saddlebags: kind of a fusion between a saddle and a container, which allow you to transport more items around than you can carry yourself. The saddlebags can be applied to any pet which can ordinarily be saddled, occupying the same slot. A pet wearing one can be directionally looted, which moves items in and out of the container. Possibly, they cannot be used to hold any bulky items, and there may be a cap on the overall weight they can contain, determined by the pet’s carrying capacity.

Not specified if they contain a saddle as part of the item, enabling you to also ride your saddled pet while also carrying objects in the saddlebags.

If you totally destroy a container by forcing it with a blunt weapon, and one or more potions shatter as a result, they should cause vapor effects around the chest’s area (which will always affect you, of course).

If a potionless conduct is implemented, this should break the conduct.

The menu for putting items into containers should mention which container you are putting items into rather than just saying “Put in what?” because in cases where you are trying to put bag-of-holding-dangerous items into a stash chest, you want to be really sure you are putting them into the chest.

Shopping cart, a mobile container that can be used to hold and transport other objects. When it contains at least 1 object, attempting to move onto its square instead pushes it as if it were a boulder. If you m-move onto it or attempt to push it into an obstacle, you instead move on top of it. Since you are not personally carrying the objects in the cart, they do not add to your carry cap.

The main drawback is that it’s unsuitable for taking down stairs. If you push it onto a downstairs, it will fall down the stairs, spilling its contents on the floor below and possibly breaking fragile ones. It can be carried down or up stairs, but this will of course be impractical if you’re trying to move a lot of items.

Whenever you use a cursed key to unlock a container, there is a chance that another item in your inventory gets cursed.

A containerless conduct, which prohibits you from applying containers in inventory and picking up containers not in inventory.

It does not prohibit merely having a container in inventory (which would make Rogues and Archeologists break the conduct immediately), nor does it prohibit looting containers you find in the dungeon. The point of the conduct is to play without being able to ever have more than 52 non-loadstone items at one time, protect your carried items from elemental or water damage, or get weight reduction from a bag of holding. Allowing looting of containers means that players don’t have to resort to bad workarounds for random chests such as locking and bashing them until they break apart.

Heroes that start with sacks still get a small benefit from them, in that they can choose where to place a container as an early stash and put items into it rather than leaving them in piles on the ground.

The feedback in #conduct is “You have never picked up nor applied a container.”

The interface for interacting with containers should replace ‘A’ as the key for “insert all” with a harder-to-hit key such as “`”, because most bag of holding explosions come from fatfingering “A” instead of “a”.

Searching (whether manually requested via the “s” command or automatic from the intrinsic) should automatically search any chests or large boxes on your current square for traps in addition to searching the 8 squares around you.

If you get a full identify insight (either exclusively from a throne, or from any source) but everything in your main inventory is already fully identified, all items you are carrying in containers recursively get fully identified as well.

Something to prevent autounlock from automatically forcing a chest you want to open. This probably takes the form of a new option, either an “autoforce” boolean option or a new paranoid confirmation flag which would add a prompt (or turn the existing prompt into a “yes” confirmation) before you force a chest with autounlock.

If there is a scroll of scare monster in a container, monsters will still open the container, but will not take any items out of it.

When the player is Weak or Fainting and uses the eat command when they have nothing to eat, the game searches through any carried containers to see if they have any food stored away in them, and if so give them a hint to check those containers.

It’s intended as a parallel to the “Perhaps you have some gold stashed away?” hint given when attempting to pay in a shop with insufficient money but money stashed in containers.

Saddle bags, a container that can be equipped on a saddled pet. Looting the pet from an adjacent square will ask if you want to open the saddlebag, and if you confirm it will give you the normal container prompts to put in and take out items.

The “Take out what?” container menu prints how many inventory slots you have available.

When a container is polymorphed, its contents spill out onto its square rather than vanishing. The contents do not get polymorphed from the same source.

Untrapping a container, whether or not successful, silently reveals the locked/unlocked state of the container.

The directional loot command works on adjacent containers, not only on your own square.

When standing on a (not known untrapped) container and using the search command, prompt the player to check for traps on the container. Search normally if they say no.

Empty boxes are never trapped.

Storeroom: a special room that only generates in a dead end room, perhaps only if the room is under a certain total area. Contains 2-4 chests or large boxes, and rarely ice boxes. If the game had barrels, it should have some of those too. May contain a couple rats too.

Containers never generate with food. Instead, split up the probability of food among other object classes that have nonzero probability, and also allow some tools to generate in them.

Every lock in the game has a deterministic chance (based on object ID if a box and xyz coordinates if a door) of being unopenable by a credit card. Attempting gives the message “It doesn’t look like this lock can be opened with a credit card.”

• Boxes have a constant 60% chance of being like this, and doors are based on depth, starting at 10% or so on level 1 and increasing to 80% by level 50.
• Possibly extend this behavior to locks that can’t be opened by a key either, requiring either a lock pick or magic.

When a container containing items is polymorphed, it can only turn into other containers (possibly never a bag of holding to prevent abuse). Or else the contents just get spilled out (and possibly polymorphed themselves).

Padded sack: bag that protects its fragile items from breaking.

Implicitly untrap a chest when opening it (check it once for traps, not enough to guarantee there are no traps, but if one is found, prompt to attempt removing it.)

Paper bags that are a container but disintegrate when wet. They can generate with a potion of booze inside.

Split containers into a dedicated object class, whose symbol is ]. (Mimics can still be ] because the traditional disguise of a mimic is a chest.)

The chance of breaking items inside a container by kicking it should be based on Strength minus Dexterity. The idea is that more force is likely to smash something, but more control will make it less likely.

Saddlebags, a rarely generated container that can be applied to a saddled mount and then have gear put into it, allowing the player to offload some of their weight onto the mount. While they are as nonmagical as a sack, they have a higher base cost and weight. You can loot it on an adjacent mount by using the directional #loot command. Knights may start with one.

80% of locks on containers, determined by the object id of those containers, should be unopenable by a credit card because they’re a latch or padlock or something that can’t be jimmied open. Perhaps Tourists should get a bonus that allows them to open more locks.

Greed, a new object property for containers: the container will refuse to open 80% of the time, costing a turn. Either any gold put into the container vanishes permanently or gold weighs nothing when in the container.

Add a command (generalization of #tip, or #dump, have both been suggested) to transfer all items from one container into another container without having to temporarily place them in your inventory. It would be better but perhaps harder to implement if you could pick and choose which items were being transferred, rather than all of them.