Unfortunately, sledge, Mouldy's veg patch is likely to be full of vegetables, so that idea might be counter productive.
Certainly a "Stick the Eyepatch" game should work.
Alternatively - if we are talking "Pirates of the Carribean" how about seeing if you can find one of those jointed cardboard skeletons to stick "something" on (maybe a cutlass?)
Quack!
Geoff.