Too precious to throw away

I made some more weavette squares the other day. These were the snippets of yarn left over after weaving in the ends. I couldn't bring myself to throw them away! Seriously folks, look how small these are:

These are pieces of handspun yarn. They were spun and plied on my drop spindle. I just thought it was a shame to discard them - not because they are actually useful but because of the effort it took to make them.

Do you have any crafting supplies that you hate to throw even when they aren't very useful?