I went to the Lego store one time and filled a bucket with random bits and pieces to make coasters with. This is what I did with the left overs.
I drilled a hole on the top and bottom of each small Lego. The bottom with a hole just big enough to squeeze the fire pieces in snuggly. If the hole is too big, they fall out
I added the chain to the top (so they dangle more), and the earrings.
Simple, quick and way easy