Outdoor shower/water day for kids.Could easily be made with hollow box uprights, run the water tube through one and the top hollow box with a PVC tube that you drill holes in for the water to run out. Faux paint it to look like copper, really pretty easy.
Elf house on a tree! That would be cute in the garden, especially in the tree over grown with ivy. How about some battery tea lights in the windows during outdoor parties. I hear the fairies/elves whispering "home school project" in my ear.
Log Bird Feeder - 23 DIY Birdfeeders That Will Fill Your Garden With Birds (my note: I haven't looked at all of these, but at least one is a terrible idea. The window birdfeeder -- birds could fly into the glass and hurt themselves.
Got Stones? Creative, Easy and Artsy Ways to Use Rocks in the Garden
Leaf stepping stones in gravel… In a bucket or pail, mix two cups of cement with 1 cup of water to create a thick paste. spread the cement mixture onto each leaf. Allow the cement to dry then Flip the mold over, and remove each leaf.
giant kids tree house in family backyard.How amazing would this be to have in your backyard? I'm pretty sure the parents and their friends would be in there just as much as the kids! This is my dream home. I'd live in there forever and never come out!
Looking for a unique and powerful accent to your garden? Try some wood stairs: These thick slices of tree trunks lead up through a stone wall, providing a functional pathway with natural beauty. See the whole Diablo Teahouse Garden at Living Green.