A Good Question:
Though by themselves not too unusual I'm working on some interesting projects:
1) a perennial salad bed. reseeding greens plus chickweed, fava beans (for the leaves), and perennial onions. So far, so good, salad harvest every week no matter the season.
2) northwest natives as crops. these haven't really gotten going yet, but i've got salmonberry, american cranberry, roses (for hips), etc. The list is endless. I'm trying to find that interesting edge between domestication/increased production and wild-crafting. Also I have some oregon oaks and camas, but they, like salmon, may at this point be too precious to eat.
Maybe at some point I'll move the native discussion to its own topic. It so fascinates me. I don't really geek out on exotics as I'm thrilled at all the possibilities with native plants.