When I decided to paint my stacks of tires, I bought one disposable paintbrush per quart of paint.
The first day I had that wasn't wet (it rained 19 days last month), I painted one tire in each stack green. I threw away the green brush and the can.
Today I painted half the tires yellow and decided that was plenty. I put the paintbrush in a ziplock bag and will hope for the best tomorrow.
The green tires look better than the yellow ones so far.
On the bright side, I walked over 9,000 steps because it was better than painting tires:)