Dice-O-Matic hopper and elevator (2009)
Cute mechanism, but only running it part time and storing random numbers for later use is asking for a security breach. If you can find out what random numbers are coming up, you win.Vibratory bowl feeders pretty solve the problem of getting simple objects lined up.[1]  Any object that isn't lined up properly gets dropped off the ramps back into the bowl for another try.[1] https://www.youtube.com/watch?v=Mejn0n4IslY