I have a small space I planted in oil seeds, grass, oregano, canola, vetch and volunteers; no pattern, just randomly strewed. The bees enjoy it, field mice run about in it, and soon the birds will harvest the seeds.
I did it by accident last year, too lazy to put out grass and flowers, and let the seeds scattered by birds and squirrels from the feeder, and volunteer plants come up. It was entertaining to relax on the deck and watch, so I repeated deliberately.

Bees really work on the oregano and vetch. Two of their favorites.