Jay, they're about 1.5" belly to backbone and 2.5" nose to tail..Use a photo as others have stated for a pattern,, Cut a blank from 5/8" stock, round over the belly leaving it a bit "plump" , round the backbone over at about 1/2" and you'll be real close in size.. I make about 40-50 Punkinseeds a year, sell to collectors.. If you want vintage appeal, just rob an old Heddon River Runt or Heddon Midget Digit lure of its lip & hook hangers as they're the same hardware.. Attached pic below shows one I made for myself & painted in a Largemouth Bass pattern..
John~