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.
I had a couple stem broken wine glasses. Use dollar store stemware or repurpose broken stemware. put glass down in plant and place a candle inside, use a citronella to keep bugs away or battery operated of children are around.
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.
When Lane no longer wants to play with his dump trucks I'm going to do this with them as a memory of when he was a little boy. 30 Fascinating Low-Budget DIY Garden Pots Lyons Vos are these like the Tonka trucks John used to have?