This year, I tried planting peas and beans inside two weeks before I normally plant the seeds outside. This worked great and with this I was able to do 2 batches of peas and beans this summer. I'm going to keep doing this!!
I made a trellis for my cucumbers and buttercup squash to grow up, and on the shader side of the trellis I planted spinach and lettuce since they prefer a little shade.
I also plant sweet potatoes in a tote since they like the depth. I bet potatoes could also be planted in containers.