They came from Daiso (Japanese dollar store), which has locations in California. There's an online shop, but I don't see these for sale.
i haven't been to the one in serramonte, driving in that area is like a deathtrap. i keep thinking some dumb ass kid or old lady is gonna just plow into me.
That looks delicious! I need more filled RxH, once I feel I can afford/justify them. So far only have the GID BB Mutant Head, kicks ass.