Put your fishing poles in your golf bag so you don't have to carry them. It's easy to pull bag around on bag cart.
Use an old golf bag as a tote to help lug your garden tools out to your garden.
Don't know what to do with that old golf bag and cart? Try using it as a tool caddy.
DH took an old golf bag and made a place for his pool sticks. The plastic tubes for the golf clubs will keep the pool sticks in an upright position and keep them from bumping into each other.