Make a backyard bowling alley. Add food coloring to clear plastic bottles of water. Use party streamers as lane margins. Add glow sticks for night bowling. (These would make great outdoor table nightlights also with the glowsticks, gonna try it!
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!
How to Make Sponge Bombs . Sponge Bombs are a great alternative to water balloons. There are no messy balloon bits to clean up, and the sponge bombs can be used again and again. These sponge bombs are great for active playtime fun all Summer long!
Outdoor tic tac toe using stone tiles and rocks. I would make a small garden for the kids and have this in it. Cute decor when the kids aren't playing with it. Great for when the mom is at work and the kids want to play
Sidewalk Simon Game- A Rainbow Learning Activity. You can make your own with chalk version to practice colors and strengthen your memory skills. Jump from color to color, adding one more color each round to see how much they can remember.