What do you can?
My buddies and i always fish tuna in the fall. When there is none to be caught i'll buy flash frozen whole albacore, 2.50/lb. 50lbs lasts us for a year or so.
We can it with chipolte, pickled jalopenos, rosemary&oil, you name it, home canned tuna is the sh@t!
Tomatillos: chile verde, gazpacho
Tomatoes: salsa, pasta sauce, whole, paste, juice
Peppers: pickled, pepperchinies
Cucumbers: pickles
Green beans: pickled
Carrots: pickled
Pumpkins: save for feed for livestock
Apples: sauce, pie filling, sliced
Onions: with the tuna, carrots, tomatoes
Berries: jam, pie filling
Pomegranates: jam
Avocados: haven't figured it out:)