Artifact dart Safety Pin. It has no special benefits if used as a dart, but instead has a passive carry effect of protecting all your scrolls in open inventory from burning or wetting.

An object property “of rust”, applicable to weapons, which causes its target’s gear to rust and, eventually, get destroyed.

Having a copper weapon wielded while suffering shock damage has a lightning rod effect: it causes you to take extra damage, but completely protects all your rings and wands from being destroyed.

Moth larvae trap, which destroys cloth items you are carrying such as bags, cloaks, blindfolds and towels.

Worn rings are targeted last for destruction to electricity damage: they’ll only disintegrate if you’re not carrying any other rings to lose.

A moist towel in your inventory prevents scrolls from being burnt up.

Instead of electricity blowing up your wands and rings, it makes you incapable of using rings (and potentially disables your rings’ extrinsics) for a few turns.

If you have a scroll of remove curse in your open inventory and you get hit with a curse items effect, the scroll occasionally intercepts the curse like Magicbane does, but it gets destroyed in the process.

Polypiling can’t create matter out of nothing. If an item is trying to polymorph into a heavier item, it must absorb the mass from other objects in the pile, destroying them. Note that if polypiling a stack of same-weight objects (potions, or scrolls), none of the candidate items will be heavier, so this will never trigger.

Every turn on the Plane of Fire, all scrolls and spellbooks in inventory or on the level are destroyed (except for naturally fireproof ones).

You can use #force to pry open doors with edged weapons; however, this requires more Str and has a higher chance of breaking the weapon (perhaps dependent on the weapon’s weight.)

You can’t safely wear more than N total points of enchantment on all your armor at once. More than that, and armor pieces may start randomly exploding.

The player can cast destroy armor at other monsters at melee range.

Revamp ring explosion on charging them: a ring enchanted to a positive value has a enchantment in 7 chance of “vibrating unexpectedly” or something similar. This is a warning and, like weapon vibration, does not hurt the ring. If you get this message, the ring’s otrapped flag is set. Charging a ring with otrapped set always explodes it.

There is no other way to ascertain the otrapped value of a ring, other than getting this message. A ring that generates at +4 or above has an enchantment in 10 chance of already having otrapped set. Discharging the ring via cursed charging or drain life has a 50% chance of removing the otrapped flag per point lost.

Lances go through one or two levels of visible damage (e.g. “cracked lance”) before being destroyed completely, rather than being able to break outright. Repairing the lance with the same methods being used to repair erosion will fix this damage, and erosionproofing it will make it immune to cracking or breaking.

Placing potions in an ice box makes them instantly freeze and shatter.

Potions of acid and oil are immune to freezing and shattering.

Make somewhat more of the effects from dropping a ring into a sink not lose the ring.

Ring of item protection (ported from Rogue’s ring of maintain armor): protects all inventory items from damage of any sort, which includes outright destruction such as monsters casting destroy armor and ring/wand explosions. Also includes protection from disenchanter disenchantment.

Disintegration rays have a small (on the order of 5% or 10%) chance of destroying the player’s reflection source instead of reflecting. This terminates the ray, so the player can’t get hit twice by it.

Asmodeus’ cold attack can freeze potions in containers.

Fragile items get smashed by falling to the ground while dying or passing out or falling downstairs.

Proposed nerfs for ring and wand destruction due to electric damage (some of them extensible to scrolls, spellbooks and potions for fire and cold damage):

• Rings never explode, as they are rarer and a more crucial part of a player’s gear. Only wands explode.
• Wands and rings made of metal never explode.
• The amount of wands and rings that can be destroyed by a single shock attack has a fixed cap. (Currently it has no cap and everything can be destroyed if you’re unlucky.)
• Extrinsic shock resistance (and only extrinsic) protects against these effects completely.
• Wands and rings hit by electricity act similarly to being charged, though they don’t actually get charged. Wands have their recharge counter incremented then roll for explosion. Chargeable rings roll for explosion at their current enchantment (meaning +0 rings will be safe). Not specified what should happen to unchargeable rings; perhaps they should just behave like +2 rings or something.
• The maximum number of items that will be destroyed is the amount of damage divided by 10, so an attack dealing less than 10 damage will never destroy anything, and e.g. a 6d6 damage attack from a wand will destroy at most 3 things. Combined with a possible hard cap of 5 or so items per damage.

The chance of breaking items inside a container by kicking it is based on Str - Dex. The idea is that more force is likely to smash something, but more control will make it less likely.

Polymorphing a highly enchanted object will vaporize it if it turns into something that normally can’t be enchanted that high.