First of all, I apologize for this poor schematic. I just don't have the time to fix it. I illustrated my basic idea. It will require a 2P2T switch. The NC and NO connections are shown on the schematic ( I don't have a good switch symbol, a NO contact is shown as break in the wire, and a NC contact is shown as a continuous wire.) The left timer is an astable oscillator and the right timer is a one-shot. By throwing the switch, the two timers reverse roles, and the right one becomes and oscillator, while the left one is the one-shot. One configuration simulates CW and the other CCW rotation. Change the values of the timing caps for more 'realistic' frequency. It requres 2 555's 8 resistors and 4 capacitors ( not including PS decoupling caps )