New Project - Building a Stir Plate

I have a new homebrew project to occupy the next couple of weeks.

I am going to try my hand at building my own stir plate. I've seen nice commercial versions all over the web from $50 to over a $100 bucks depending on all of the bells and whistles that you have. I've started putting together my requirements, and what I think I need as far as a parts list. From looking over several posts in zymurgy, and a great walkthrough on www.donosborn.com, I think I should be able to do this pretty easily. So here it goes.

Requirements:
1.) Must be able to hold a 2 liter Erlmeyer flask.
2.) Must have an on/off switch
3.) Must have speed variability
4.) Must be aesthetically pleasing as possible.

Parts List:
1.) 6 Volt Power Supply - I think I have a few of these at the house.
2.) CPU Fan - I know I have at least ten of these!
3.) Wood Box w/ lid - I'm budgeting $10 for one of these at the local cigar shop
4.) Wire Quick Disconnects - $3 at Ace or Radio Shack
5.) 25 Ohm Potentiometer - $4 at Radio Shack
6.) 4 bolts
7.) 4 neoprene spacers - $1 at Radio Shack (So I can have room above the fan for the magnet)
8.) 4 neoprene washers - $1 at Radio Shack (Absorb vibration)
9.) Control knobs - $2 at Radio Shack
10.) Switch - $3 at Radio Shack (I want one I can mount nicely to the box)
11.) Rare Earth Magnet - I should be able to scavenge one from a dead hard drive at home.
12.) Stir Bar - $5 at Northern Brewer

So.  As I take this project on, I will take some photos, and put together a how-to blog post.  I hope to get it done by the end of November, and have it cranking away at building some great yeast populations by new years!