How do I make a simple battery operated lighting circuit?

I'm creating a lamp for a product design project in school, and my aim is to make a portable, environmentally friendly lamp, so, in designing this lamp, I thought that it would be best to power the lights on a circuit. Can anybody show me how to make a circuit with several LED lights, where the circuit can switch between different colour LEDs every 10 minutes and the circuit has an integrated switch to turn the light on and off. preferably the circuit can run on a single AA battery, and is small, yet simple enough for a beginner to make. Thanks :)

Re-design7 years ago
THis should get you started.

Or this one.  It's a kit but it has the schematic.

What you are looking for is an astable flipflop or flasher.