Step 1: Parts
1X: 3x4 plate with connection brackets and 1x4 plate with opposite connections
1X: 2x1 plate with connection brackets and 2x1 plate with opposite connections
1X: lamp with positive/negative leads
1X: nut with swivel piece that fits onto a tripod bolt
1X: (optional)reflector for the lamp
1X: 2AA Battery Holder
1X: 2AA Batteries
1X: Template for the soft screen
As you can see, the only way to classify parts is as either Lego or Non-Lego.
All Non-Lego parts can be, with some difficulty, replaced with custom or store bought parts.
Total Cost-$0 (may be up to 5 dollars if you don't have certain parts or more if you choose to custom-build parts)
Step 2: The template
WARNING: Do not cut out the template yet. Continue on to the next step for detailed instructions on template contruction.
Step 3: Assembly(Part 1)
You can use many materials for the screen template:
Thin white paper
Cut frosted glass