Last year I started some of my seeds in last year's left over plastic 6 pack containers that seedlings from the previous year had come in that I steralized, and many in the cardboard like seed starters. Then I one day I spotted one of the little plastic boxes my grape tomatoes and spinach came in, and thought to myself "that is a mini green house!" They were perfect. In the past I have used egg cartons, but found those got mildewy too fast, but those lovely little plastic boxes are perfect.
So far I've started corn, catnip, spaghetti squash, eggplant, and some peppers. Now if the weather would just cooperate I'm ready to start cleaning the yard. Unfortunately, this week's forecast doesn't seem to be cooperating with my desires. Oh well, there's still plenty we can do now in the planning stages. If you haven't already read Mommy Melissa's post on garden planning, check it out, she shared a great link!