I'm trying tomatoes. Papito put me on to it. You can take cuttings of this years plants
and root them indoors. Just watch the fertilizer or they will outgrow their space. Last year mine got over 4 feet tall and I had to go in the hospital. This year I'm trying it with the tiny tim cherry tomatoes because the plant
is very compact. So far so good.
It would probably be best if you gave your seeds
a bleach bath before planting to take care of any of the virus(?) that causes damp off disease. I had a problem with that will some of my lettuce last year. This year I'm having better luck with a different brand of lettuce.
Bush beans can be grown inside but I don't think you could do enough plants
to make it worth your while.