I'll let you in on a fun, yet sort of embarrassing collection that I started a few years ago: Corks & Coozies. I have a jar full of both items. And I mean FULL. It's mostly coozies, because those are obviously more useful. Also, I collect a coozie from just about every place that I visit. If they sell them, I but them. I will admit that it the most creative thing that I have ever thought of (Don't judge).
Tonight, I added three more corks to the collection! Can't wait to throw them in the jar!