Step 1: Items needed
20 pin socket
8 LED's (I used the mini T1's, but probably just about any would work. Make sure they are all the same, I raided mine out of novelty toys and my junk bin and some are brighter than others)
8 100ohm resistors
2032 battery holder and battery
PC mount switch
Fine enameled wire like what is used in hobby motor coils. That is where I got mine, tore apart an old non-functioning motor
Stiff wire I used .025" music wire, but in hindsight I needed something bigger, like a thin clothes hanger
Heat shrink tubing or electrical tape this insulates the LED's from the wire, and contains all the thin wires together in a bundle.
Perf board about a 1-1/4" x 3" piece
5 pin header optional, but I don't have to pull the chip out to change signs
Small hobby motor I couldn't find any specs on the one Ii used (found it in my junk box of motors) I think it was originally meant to run on 6 or 12 volts, because at 3 volts it only pulled about 20mA, and runs fairly slow, which is good.
2 "AA" battery holder with switch, or separate switch
Hot glue gun
small needle nose pliers
Dremel (optional but makes cutting perf-board easy)
small drill bit the size of the motor shaft "mine was 5/64"