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.
"LIBRARY" Nook in MBR high x wide x deep). Nakishima-inspired interior by architect Tim SEGGERMAN. Functional nooks crannies are part of a revamp of a tiny 240 sq ft New York City apartment. Photo slide-show of entire apt at link.
buy the wood from home depot, use the screws to hook the chains with and make it the size of a twin size bed.buy an old twin size mattress cover it in plastic then in outdoor fabric to make a cool swing for the covered patio @ DIY Home Design