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You can make Winking Eyes using J-K master slave flip flop. Connect Q output of Flip-Flop to one LED and Q\ to other LED. Tie J and K inputs to Vcc. Apply slow clock (around 1Hz) to clock pin. This will make LEds to go on and off alternately. Very simple thing.
Or you can make ring counter using several Flip-Flops. If LEDs are connected to output of each Flip-flop, and initially the counter is loaded with 0001, then the circuit will make the LED run in a sequential order on each clock pulse. Simple circuit.
Or you can make a touch switch using T Flip-Flop which will turn the connected load ON/OFF on touching the touch plate. A bit complex circuit.
well my second year final project was about 0-99 counter made with flip-flop.unfortunately i erased mine from my hdd. ihad the schema drawn but this link should help u too ithink.!we made it with 2 7447chip and 2 7490 chip.
Tansis - just a bit of nit-picking - your diagram of the 555 doesn't show power supply or reset connections ( pins 1,4,8 ). I know it is usually omitted from logic gates, but for other ICs it is normally shown. And regarding the 'roll' switch - whilst it does work this way, wouldn't it be more conventional to put an NO switch between supply and pin 4?