1. Fold a fitted sheet!

2. Tear off plastic wrap and put it on a bowl w/o it sticking together (four tries minimum!!)

3. Put a 48 inch pillow in a 32 inch Sham w/o ripping the sham to shreds!

I'm sure there's more haven't thought of or will soon discover.

Edited: I do know how to fold a T Shirt, though.
http://www.youtube.com/watch?v=An0mFZ3enhM