As in most dungeon games a character in Dungeons of Dredmor finds many many items that are useless to them. Full plate to the mage, staves to the rogue, etc, etc. Is there a way in Dungeons of Dredmor to share or gift items between characters?
Nope; this game is supposed to be hard (-ish), so no giving your other characters a boost. Dungeons of Dredmor follows "Roguelike" themes, not "MMORPG" themes. Thus, you have (the option of) permadeath, and no sharing items between characters. If you take a crafting skill, you'll be able to get some items for your class; anything else you can't use is either merchant fodder, something you might be able to break down for parts, or fuel for the Horadric Lutefisk Cube.