haha
@digitS' i can imagine you stomping those and winnowing. i've done a smaller version of that by taking 5 gallon buckets out on the south grassy area and letting the breeze do the work for me. mainly when i was after some dianthus seeds.
daikon radish seeds are sold by the pound or large bags here at the grain elevators. they make very good cover crop and i love the flowers. i have some sprouting again in the north garden patch and a few survived being weeded - the deer will eat them if they are hungry enough. i'll eat some of the sprouts if they come in too thick. they do a great job of drilling down through compacted soils and if you can rake some mulch into the holes in the spring then you've improved the drainage and given some worms a better hiding place.
the other cover crop that can be bought here by the pound is the purple top globe turnips. they also have flowers i like to see. i don't have any growing this season though. i didn't get any planted and none returned. normally i try to have some growing just for emergency rations. too short on time to really work on the cover crop edges i'd like to have going.
buckwheat is the other cover crop i like to have growing for the flowers and green manure. the deer will really target these if i grow them.