Sunflower House: fun to play in once the sunflowers grow tall! I have seen this done with on large square with side "rooms" and an entrance area. Fun for kids especially if they plant seeds and tend .making their own playhouses.
Lost my best friend in July, i will have her planter like this come spring, she used impatients in hers, therefor i will reuse it like this but with impatients under our tree in memory of her ,also put a angel by it
Insect hotel - Sustainable ideas including an explanation of the materials used, which insects they provide a habitat for and why you want that insect. This would be perfect to have as a project to build with a youth program