Aspirin Head
I have used the aspirin head for over 15 years now. If you are looking to buy a mold Do It Molds actually call theirs the "Pill Head" mold.
Although I use these heads religiously on Lake Erie for smallmouth I also use them for crappie too.
My only real complaints are that you have to make them one at a time and that takes forever and the head is a little big for hollow tubes, therefore I use Crappie Pro solid bodied baits on it. I have no pics available right now but I'll try to get some posted.
Crouch & Hengstler Team Vicious, Southern Pro, Crappie Pro