[Clipper]

Yes, I did mean that those Items qualify to be stolen. I should qualify that not all weapons will be able to be stolen (there are some that can be worn in Fantasy, such as the Spiked Codpiece), but most should.

As for whether to draw the card into your hand or leave it in play, Items that are in play generally stay in play unless a card says specifically to put it into your hand or you are looting the corpse of a recently deceased munchkin.

So you just move the card from in front of the original player to being in front of the player with the Sidekick. If it's a One-Shot Item, it won't get used immediately or anything. Note that you can only steal One-Shot Items that the player has in play in front of them (they probably would have played them there to avoid Charity). You can't steal one that the player has just played to utilise its effect.