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 1 Switch 2 AA batteries 1 AA battery holder that holds two 1 Utility knife 1 Drill 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.