my wife wanted earrings, matching her BB-8 t-shirt. But she could not find one.
So i have to print it...
I remixed the model from julia23jia: https://www.thingiverse.com/thing:1751865
and downsized it 2,5 x 3,7 cm
i set the infill to 60%, maybe it will be less filling. You have to try it.
to complete it, you need some parts from a "jewelery-makin-craft-set" (see pictures).
Heat the "needle" with a lighter and push it in BB-8's head.(.....ouch!), attach ring and hook on it....thats it.
hobe you enjoy it.