I know it's too late this year, but I think this is a super cute idea to use for next Christmas.
I confess that I have been compusively saving wine corks since Jonesy was a kitten. He was such a little terror! He especially loved "killing" my knitting. When he had a ball of yarn, it looked for all the world like a dead thing he was dragging by the scruff of its neck. The only toy that could distract him from my yarn was a wine cork bouncing erratically across the floor. I used to keep my pockets full of corks to distract him while I knit. Now I have a big basket full of them, and I still keep throwing more in it. I guess I'll be ready to give a little gnome orament to the entire neighborhood next Christmas!