We built a cold frame yesterday, using odds and ends of lumber and some of the many old windows we have stockpiled for building a greenhouse out of, someday. It turned out pretty nicely, if I do say so myself.
I can't wait to get some lettuce and spinach going in it! Of course, it's snowing again here this morning, so I may need to wait another week for the soil to warm up enough to plant, even under the frame. It's great to have finally put a cold frame together, it's been on the project list for years.