William Bronson wrote: I wonder if you can bake it into loaves or kibble for animal feed.
Perhaps in a dutch oven over a biochar retort
If you purposely soak it perhaps you can inoculate with lactose acid producing bacteria?
I've been soaking grains for the chooks this way, and it smells like sauerkraut.
In world war II the Glenfiddich Distillery was able to keep producing whisky because they pressed and dried the spent malt into cakes that they sold to farmers for the cows. In that form the cows apparently liked them, so the farmers helped lobby to keep the distillery open.
Another quick way to use the spent grain is to inoculate them with mushroom spawn. I believe oyster mushrooms will do well for the first flush, you can then sterilize and grow another species. With grains I seem to remember you can do three species in succession. With smaller yields each go.