I started some seeds this evening — Tomatoes, a mix of bell peppers, hot peppers (mostly chilies, cherries and jalapeño), Basil and Cilantro. I mixed new seeds with some I had left over from two years ago. I've always suspected that the expiration date on seeds meant nothing. I mean, they're SEEDS, right? I'm sure google knows the answer to that, but since I've already done it, I'm more inclined to just wait and find out.
I had bought the little "greenhouse" several years ago. Egg cartons = free. Seeds + a small bag of organic seed starter soil = about $6. Fresh veggies to nom all summer = priceless.