I've developed a bit of a kit/instructables type thing for a color organ in an Altoids Tin.
I'm pretty amateur myself so the instructions aren't perfect and my circuit is a bit unrefined. Hopefully the abundant pictures make every step clear enough.
People who are relatively new to electronics but have built one or two things before. (I'm ordering lots of parts to run this as a quick build lab for freshmen/sophomores in Michigan State's Audio Enthusiasts and Engineers group.)
What you'll need to know:
-How to solder
-How to teach yourself a few software related things (If you've never used Eagle)
How to sanely lay out the circuit on a perfboard still have it fit in the tin.
What you'll need:
Metal Punch (1/4" and 9/32" holes) recommended
I'd be tickled if any of you build this. I just wanted to show it off.