I'm a long time lurker of a couple years actually.. So I've finally decided to post something up here.
They're really easy to make, and really cheap. Mostly made out of things from around the house. My ears are 1/2" (only :,[) so instead of the tampon end you might need to improvise.
2 Tampons (I use the compak kind), 2 tiny rubber bands, super glue, scissors, a lighter, and gems/buttons/whatnot.
Step 1: pull out the applicator stick from the tampon. Cut a 1 inch piece off the end.
Step 2: Put heat against the end that was cut with the scissors. This is to smooth out jagged edges.
They should look like this:
Step 3: Put super glue around the opposite end. Have your gem or button face-down and place the glue end to the back of the gem/button. Hold for 30 seconds and then let dry for 15 minutes.
Finally: Stick them through your ears and place the rubber band on the back to prevent them from falling out!