That's one thing I need to look into, a meat grinder. I've got some deer left over in my freezer from last year, had to cut up the stuff I couldn't get good full cuts into stew meat chunks because I didn't have a grinder to mix it with some pork sausage. Basically that small left over stuff you'd grind. It'll go in the crock pot eventually as it is.
I prefer to use an old cast iron hand crank grinder we've had in the family forever to make kielbasa, but, chewed up whitetails in ground just fine too.
However, the wife hated it, and sometimes the shoulder acts up these days. Bought her the attachment that mounts to the front of her kitchenaid mixer, which, works pretty good too. And if you want to make venison sausages at any point to also has a stuffing attachment that can also be slipped on too that you can roll casing on and have it direct feed out, pretty handy.