I saw an article for making necklaces from bottle tops. You punched a hole in it and added a chain.

I'm not sure I've ever seen that but I have made necklaces from bread tabs ( you know those little plastic tabs that hold bread bags closed). Here's the instructions:

Materials:

Glue

White paper scrap

23 plastic tabs from bread bags in assorted sizes

Acrylic Paint -- black

Dimensional paint -- silver, bronze and gold

Paintbrush

Needle nose pliers

23 gold finish jump rings

Instructions:

Cut 2 tiny strips of paper for each of 23 plastic tabs. Glue 1 strip to each side of 1 tab to cover slit. Let dry. (This step will help to keep the jump rings from pulling through the slit in the tabs.)

Paint both sides of each tab and paper strip black. Let dry. Glue 3 tabs together ( at different angles for the main charm). Let dry. Paint with dimensional paint in any design you like. Let dry.

Using needle nose pliers, attach 1 jump ring to each of the single tabs. Attach 1 jump ring to necklace charm. Attach jump rings to necklace.