If you try to equip armor that is too big for you, the game shouldn’t just tell you “it is too big for you to wear”; instead, it should allow you to wear the armor piece, but it falls off after a turn or two. If the armor is boots, when you move, you should leave the boots on the square where you started.

Cyclops smiths, who can (for pay?) create weapons with object properties and, in variants that implement differently-sized objects, large sizes. They should probably not be able to make artifacts.

In variants that have differently-sized objects and inability to use items of the wrong size: An artifact armor piece, possibly gloves, that allows you to wield things that are one size larger than your current limit.

In variants which allow weapons and armor to be different sizes: giants can use a gigantic-sized sling to fire boulders.