Arduino Laser Show (adapted from NothingLabs' Instructable)

Step 4: Parts List – Tools

Not all of these tools are essential, but they can make your job much easier (and your finished product nicer). 

Soldering iron – Don't leave home without it!

Solder – No special size necessary

Solder sucker – Absurdly useful when you've got to undo your mistakes

Digital multimeter – Useful for figuring out what your mistakes are in the first place

Hot glue, epoxy, and/or contact cement – You'll need at least one of these to affix mirrors and pivots to your speaker.

Drill with electric screwdriver – useful for the mounting hardware

Heatshrink tubing and heat gun – hide your ugly solder joints

Electrical tape – for when you run out of heatshrink tubing