Red, White, Blue and 'Green'! 4th of July Backyard Water Park Written for 4th of July, this educational hands-on history party will work great for Memorial Day, too. Here's a complete DIY patriotic water fun park with 10 activities that you can set up in your backyard. All the guests, young and old can enjoy the fun! Be sure to make a separate area for the land lubbers who wish to stay dry. Your lawn gets a good drink of water and everyone can cool off. This would make a great back to school party, too. Lesson plans included! outdoor patriotic games