Have a memorable bottle cap that you want to keep? Put it on a necklace, and you can wear it around! If you're good at making memories, or perhaps forgetting them, these can add up quick, and if you're a good, you'll have a lei by the end!
Step 1: Holes
Drilling the aluminum caps is as easy an an awl or hand electric drill with a bit. I'd recommend a hole at the top, but the choice it yours. I personally prefer to place the hole at the top of the cap, but the middle will work as well.
Step 2: Keep Memories!
String them into cord or necklace chain, and keep adding as the memories add up. You won't forget them!