Intro, and sugar snap pea co-planting?

Intro, and sugar snap pea co-planting?

Hi all, I just joined the community. :) I've been growing container gardens for the last few summers, since we moved somewhere with a large balcony that allows me a good area of container space. I've been trying various veggies, flowers, and herbs over the past couple years. My forays into veggie planting have met with mixed success; my Sweet 100 tomato plant got big but didn't produce much, and my red bell pepper plants produced unpleasant-tasting results. But my jalapenos did well, and the hot Portugese pepper plants did AWESOME. Herbs have been hit-and-miss as well; dill and cilantro were misses, while the rosemary, basil,and mint were big successes. Thyme and sage did so-so. This year I've got a couple BIG containers (one is about 2' wide by 3' long and about 2' deep; and the other is probably 2' by 2' and 3' deep). I'm planning on putting sugar snap peas into the bigger container (the 2' by 3' by 2' one) and situating it next to our balcony fence, which is covered in plastic netting that makes a perfect ready-made trellis for climbing plants (I did morning glories last year). I'm thinking of either strawberries, tomatoes, or cucumbers for the 2' by 2' by 3' container. But my question is, since sugar snap peas are a "fixative" plant that fixes nitrogen in the soil, is there a particular kind of veggie plant that would work well being in the same container as the sugar snap peas - like a kind of mutually beneficial relationship for both plants when co-planted in the same container?
My jumbled garden

My jumbled garden

Our Bathroom-No Questions, I Swear:)

Our Bathroom-No Questions, I Swear:)

help! tomato question……

help! tomato question……

Emma. 14.

Emma. 14.

Extended Summer makes for Exceptional Garden Produce!

Extended Summer makes for Exceptional Garden Produce!

3 garden pictures behind cut

3 garden pictures behind cut