Critter, Your message is so great! I have been starting seeds under lights since 1974. The first year was an absolute success. I like that you put alternatives to formal light stands. With imagination almost anyone can find a spot to put a small flourescent light with seed containers under it.
To save room, I often start out with a 8 oz styrafoam cup with seeds planted in potting mix. Initially, I cover the cups with a fold-down type sandwich bag and a rubber band. I write the name of the plants on the cup with a ball point pen. It's not long before they need transplanting. People would be surprised at how many seedlings can get their first and second leaves in one cup. It's always more than I end up using. You are right! It is sooo much fun!
I use smaller containers and trays for sowing seeds also. But I think you're more disciplined than I... I have a hard time tossing out those "extra" seedings, and I try to make room for them somewhere on my light shelves! Initially, I am very popular at spring plant swaps, but by the end of the swap I think people start ducking me as I try to unload my last box of extra seedlings... LOL!
For anybody trying the styrofoam cups, don't forget to poke a couple of holes in the bottom for drainage. :-)