Actually, I'm pretty sure that you get the hair of a three-toed sloth in Flight of the Amazon Queen, though I can't say with conviction that I remember whether it's only got three toes or not.
You could really list just about any absurd thing, but what about stuff that we see every day but just for whatever reason has yet to be used? Lessee, here... What about:
A pack of hot dogs (Absurd-ish, but still easy to come by)?
Origami paper (admittedly not all that common, but...)?
A computer mouse or keyboard (To my limited knowledge, you've never been able to actually carry one around seperate from a computer)?
That's all I've got.