I can't be certain as to the accuracy of the kanji! (these are supposed to be 'Thunder')

They are called Bok Choy Boys by the manufacterer, these are little vending machine toys that my daughter found at the local bowling alley today and I thought omg cute make jewelry out of them!

There are about 12 different colours, and different symbols, which I have up on the Etsy site, and I'm gonna source more if it turns out that there's a demand for these little guys. :D