I’ve been keeping our local deer herd happy and healthy here in Michigan. Those critters dig through 2 foot of snow just to get at all that spent grain. Kinda funny though, the resident ducks and geese kind of shun the piles. Oh well, always fun to watch the local fauna.
I have had success using sweetened coconut, toasted, and doing a double dry hop (dry nut) for about 6 days each. It imparts a very nutty flavor, increased ABV, and I get good enough head retention if I age the beer properly.