Kenneth ran some experiments with the MSP430 microcontroller chip and an LCD. What he did, is he used 2 10F super capacitors charged at 2.7 volts for power supply, and used this chip to drive an LCD display 24/7, counting from 0 to 9. After 3 weeks (yes, 3 weeks) the chip was still counting and there was some 0.15V left on the capacitors down to the rated minimum voltage. The next step, was to make a clock with this. This time he used a single 3V coin cell (CR2032) for power. And because raw LCDs needs of a specific voltage curve to operate, he got himself an ICM7211 LCD driver. The overall power consumption is as low as 12uA. Considering the fact that the coin cell can supply 200mAh, the theoretical lifespan of this battery is more than two and a half years. Not bad eh? Excellent work!