

Get a long, narrow planter or two. Potting soil, and grow onions, garlic, and potatoes (based on where you live) get grow lights if you can. Onions last longer, but potatoes grow easier.
Rice and beans. Tomato sauce/paste for stretching and altering it.

This is clearly an unbirth scenario and the A and B things are unrelated. Either way, your baby is companion cube and GladOs is the father.
Thanks for coming to my Ted X talk.