This is a simple and easy to build flash light for beginners.
Step 1: Materials List
The parts you need are:
1 Altoids tin
1 Ultra-Bright LED
1 Foot of wire
1 Roll of electrical tape
2 AA batteries
1 AA battery holder that holds two
1 Utility knife
You can use either alligator clips or a soldering iron to connect every thing
Most of the parts can be bought at Radio Shack or they can be salvaged.