An old freezer or fridge may not cool anymore but it can still serve around the homestead.
Rodent proof food storage
Cut two holes about 8 sq. in. thru the back one high one low cover with metal window screen and 1/4" hardware cloth (this allows some air circulation to prevent that musty smell) and fill with shelf stable food.
We have two freezers laid on their back in the chicken pen for feed I just set them close enough to the fence that the lids just barely stay open leaned against it so that if I forget to close it the wind will! We haven't had any critters get in the food since.
We also have one at the kennels for dog food.
3. SOMEWHAT fireproof storage
I was a volunteer firefighter years ago and saw many refrigerators survive house fires with contents not really hurt that bad.
So if you don't have a true firesafe it would be a good place to store important papers photos etc.
4. In the garage barn shop.
Paint and chenical storage;
keeps it contained and away from little ones and stupid people.
Storage for animal meds,needles,tools,tags and all that other incredibly expensive stuff that goes with livestock.
Tool storage for drills saws etc.
not high security but better than just leaving them out...
5. Raised garden beds.
Take the doors off lay on back and fill with dirt plant your seed.
Keep the dirt at least 6 inches below the rim so you can cover with plastic for a cold frame.
If you want to make them look more "gardeny" cover the outside with old fence picketts for a rustic look (these sell good too!)
Well I hope you saw something useful here and maybee sparked your imagination a little.