Super Mario (1, 2, & 3)

 Based on a friend's suggestion, Super Mario Bros. nails. Since the only ones I played as a kid were on the first Nintendo, these are taken from Super Mario 1, 2, & 3. On the left hand, from Super Mario 1, Bowser and the Goombas. Question mark "boxes" on the pinkies. 
On the right hand, Mario (3) on the thumb, Princess Toadstool/Peach (3), a mushroom, and Luigi (2). I now wish I still had a working old Nintendo.