I would put small amounts in containers and freeze them for pizza, sloppy joes, spag sauce,etc. I wouldn't actually make it into anything until I opened them to use them. And since it is older, I would probably just put a few tablespoons each in baggies/double baggies and freeze. That way, if you don't use it within a reasonable period of time, you could just toss it without wasting all that extra work. Especially since it is free, and old, I wouldn't put a lot of work into it at this point, rather just store until I could use.
If you like to dehydrate, some people do that too. Make it into a leather, then cut it up, rehydrate and use in recipes.
And remember just because it expires doesn't necessarily mean it's bad. You can still use it as long as it smells ok. Or at least, I would with no fear.