You could start a few tomatoes in hanging buckets to tide you over until you can get everything else in the ground . . .
Honestly I've thought about doing an entire bucket garden. Due to DoggyMama's health problems, we haven't canned anything for the past two seasons and doubt we'll do much if any this year. By BIL actually does that. He just grows tomatoes and peppers in 5 gallon buckets (not hanging though). No weeding, no tilling, and at the end of the season, he just puts the buckets in his storage shed till the next year. I'm not much of a veggie eater anyhow. Did you know that Beefsteak Tomatoes don't have any meat in them?? What a gyp!