I don't particularly have a favorite item, but I have a favorite item usages. This, again, was from DarkSun setting. giant desert world. I have a Robe of Useful Items.

So anyway, we were being pursued in a great fort, a dozen angry elves chasing me up a ladder to the battlements on the walls of the fort. I get to the top. The elves are one round behind me. I look at the sheet that lists what the robe has in it still. I mime taking a patch off and look to the DM. "I'm using the robe of useful items."

DM:" Ok. what patch are you using"

me: The Rowboat

DM: *blink*blink*

Me: I drop a rowboat down the ladder