Years ago in a 1E game, party magic-user somehow ended up with a permanent Tenser's Floating Disc. He also had a fairly low level henchman (cleric/magic-user, I think) with a Wand of Magic Missiles.
Having little use for the Tenser's for hauling treasure or the like, it seldom got used. Until we returned to town and commissioned a man-height iron barrel, with eye slits all around.
Placing the henchman (with wand) in the barrel and the barrel on the Disc, he found himself with a floating, personal gun turret.