Pour your hot bacon grease or lard in them.
Use as scoops for graining/feeding small animals
Store nuts and bolts, nails. screws, spent brass etc. Write on the lid with permanent markers or on tape on the lids because too many storage containers like white buckets or coffee cans or plastic totes look alike after awhile.
I used some once when a poured a shop floor to create a circular void around some 1” grade 8 bolts I welded in and footed so I could chain down vehicles and straighten bent frames or compress springs, etc. with various attachments. I cut plates to put over the holes so you could still roll stuff around when not needed (which is most of the time).
We have never thrown away a coffee can. I store all sorts of stuff in them. Plastic OR metal. (and we drink a lot of coffee!)