Here's how to make your own plant stand with grow light:
I started with this three-shelf mini metal shelving from Target. They are currently on sale for $15.99, so I may replace the one I stole from my pottery studio. I like that the shelves are not solid and will allow light to filter through to all levels.
I purchased a 22" Utilitech T8 Fluorescent Plant Grow Light Lowes for about $17. I don't know the quality of this bulb and fixture, but I like that it was light weight and would be easy to take down for summer and fall storage.
I adjusted the middle shelf on the stand so that is was only a couple inches above the bottom one in order to leave plenty of room for the light and the domed mini green house without having the light right on top of the seedlings.
I then found two scrap wood blocks on Joe's work bench and screwed in the 1/2" screws. These were too short to reach through the metal bars, so I replaced them with 1 1/2" screws.
I then positioned the light where I wanted it to hand under the center of the top shelf and slid the screws into the mount hey holes. Having the mounts on two individual blocks of wood rather than one board made the installation incredibly easy. If just the right amount of screw is left exposed for the mount, then you don't have to worry about the block accidentally sliding off.