Let your drinks float with this easy-to-make (and inexpensive) pool cooler.
Awesome Ground Cover
This plant, called sedum sarmentosum, grows very quickly and flowers in the late spring.
Use pool noodles to protect against trampoline springs.
Fill up some bottles with glow-in-the-dark liquid (glow stick guts will do the trick) for glow-in-the-dark bowling pins.
Put marbles in your fence to add visual interest and cool colors in your yard.
Toilet Seed Paper
Use toilet paper for seed paper. Check out the how-to here.
Use pine cones from trees for certain garden bedding,
Bird Nest Distributor
Fill up a suet feeder with yarn to help the birds make their nests.
A basic platform is all you need to have a tree house.
Glow-in-the-dark paint on large planters will give you a unique outdoor lighting experience.