I have made peanut butter balls and dipped them using a tooth pic. Then poke the other end of the tooth pic into foam until the chocolate dries. At this time you have nice little round balls with tooth picks in them. If you like it that way stop there. If you want it without the tooth pics ( or the holes ), then melt more chocolate, take out the pics and fill the little holes with chocolate. It is closer to what you want without having to purchase equipment. I have to tell you though, I usually leave the pics in if I am not taking them anywhere.
No matter where I serve my guests, it seems they like my kitchen best