I don't know if this is such a good idea, but here's my running total so far:
500 13000mcd 5mm White LEDs = $60.00
150 x New BLUE 5mm 6000mcd LED LAMP Super Bright LEDS = $14.88
Estes Black Sand 5 lb bag = $12.00
Marineland Maxi-jet 400 Submersible Pump/Powerhead = $19.15
2.5 Gallon glass aquarium = ~$10.00
Eggcrate = ~$11.00
Live rock = ~ $20.00
Silicon = ~$5.00
Running Total: $152.03
A lot of you guys that are thinking about doing this could probably shave some of the cost by using your own live rock, sand, and eggcrate along with whatever else you already have lying around.
Here's what I'm going to add before I'm finished:
-neon goby
-2 snails
-2 hermits
-monti digis and monti caps (already bought one digi, orange with pink polyps - $40)
-maybe a clam? I don't know if I'm going to do that or not, it just depends on what I think the tank and I can handle