Two six-sided dice, where one with three blank sides and three two-pip sides, and the other has three one-pip sides and three two-pip sides, have an equal distribution of 1 through 4.
A faux d4 that has the same table feel as Monopoly, Craps, Traveller or Apocalypse World.
You can also emulate a d9, a d12, a d18, a d36 and dumbly enough a d6 this way.