If you want to perform a little initiative to your children you may select wood Pallet tree house project for children. Wood pallets for children are very completely happy if you make a DIY Pallet tree house.
Backyard fun: 10 Creative Ideas to Make an Outdoor Oasis for Kids this Summer Apartment Therapy
DIY Outdoor Hanging Bed for Kids - pallets + crib mattress
painted tire swings - cute project for the kids and good idea for the front or back yard!