DIY Mini-Greenhouse: Grow seedlings in recycled containers as Any clear plastic container will do. Use paper towel rolls or toilet paper rolls as a pot. When ready to plant, simply place the whole roll in the ground and plant.
Take a 2 liter soda bottle, poke holes in it. Attach to a garden hose. Toss over a tree branch and let hang for a kids water sprinkler. You can loop it over a tree branch and let kids bat it around for more watery fun!