Have your kids choose toys like trucks, shovels or a remote control car to help clean up.
They can shovel those legos back into the bin with their dump truck or their sand shovel.
Take the toy slide and put a basket at the bottom have them slide their toys into being organized. Or create a cardboard tube for extra creativity and fun points.
Have one of those driveable little cars for the backyard or a small wheelbarrow? Ask your kiddo to help you deliver bags of leaves to the curb.