This is not my first project, but it is my first brag. I installed new windows in my house this fall and took out some double-pane windows. I can't yet afford to build Ana's greenhouse, so I made this. I removed the old frame around the glass and took some old 2x6 green-treat, ripped them down to 2 1/2" and made new frames around the glass. I then purchased some treated pickets to make the box. The top is slanted at 15 degrees and I put a shelf in the back for a few extra six packs. The overall size at the base is roughly 36" by 46", so I can fit 6 flats there. Since I didn't have to make sure it was really square nor did I have to sand, it was my favorite project yet. I can't wait for the snow to melt and the hard frosts to disappear.
