I know a lot of use use aluminum foil to sharpen our punches, but have you ever tried an empty, clean soda can?
I've seen a layout which had heart shaped charms on it punched from a Coke can. It was so cute!
By using a soda can, you sharpen your punches and scissors and have some really unique charms to use on your layouts or cards.
Cut the top and bottom off the can first. Then, cut down one side so you can flatten the soda can. Be careful when cutting!! You don't want to accidentally cut yourself on the rough edges of the can. You can then use a piercing tool or hole punch to put holes in the charms for mounting.