No promises your kids will oblige, though.
Alice Mongkongllite / BuzzFeed
Attach old planter baskets to the side of the sandbox for easy toy storage.
Bonus: you can easily rinse them all off with the garden hose without getting the sandbox soaked. From here.
Label aluminum buckets so it's easy to pick out what they want to play with that day (and put it away afterward).
It's sort of like a menu of all their available awesome backyard options. From here.