Thanks, I discovered this for myself tonight, hahaha.
I bought Miracle Grow, Cat litter, and white sand. I would have chosen black, but that's just how it went. I bought a wood arrangement last minute for $7.50.
I went to a small independent fish store and got a Cambridge Aquatics HOB filter for 3-10 gallons for $10. I was looking for black sand but she didn't have any small bags. She said she was going to do a set up with white tomorrow, so she sold me 5 lbs out of the bag for $5.
I had to look around a lot for a desk lamp that I thought would work well. I found one that I thought was very bright at Office Depot. It has a two-pin compact fluorescent bulb, which is what I thought I wanted at the time. I couldn't find any info on the bulb that came with it, but I got it anyway since it was pretty cheap ~$20, and I figured I could replace the bulb later. Then I realized that none of the pet stores had this type of bulb for aquariums, they had screw-in compact fluorescent bulbs. So then I looked more for a lamp like that with a horizontal orientation, but I couldn't find any.
I went back to the little fish store to buy a test kit, and I talked to her there about special ordering a bulb. She asked to see the lamp, so I got it out of the box and it turned out that the bulb was 6500K already, so I was happy about that.
I came home to set up the tank and it did not all go as planned, lmao. I will post the sad pics soon.