First of all I would like to credit krazy glu with the whole concept. This is how to make a necklace with soda tabs.
Loads of soda tabs(100+ probably)
A large safety pin
Step 1: Start Collecting
You're going to need ALOT of soda tabs. I used 94 tabs, but my neck is really small so you should probably get as many as possible. I would say 100+.