I made this ladder golf set a few weeks ago, and it was a big hit at our last party. See the post here on Momtastic.
A staple of football tailgates, this game is a great addition to the backyard. DIY instructions via Home Stories A to Z.
Some 2x4s and paint take the classic tabletop game Jenga into the backyard. Just be careful little ones don't get toppled on during the game! DIY via A Beautiful Mess.
It's amazing how far technology has come. Now you can play laser tag in your own yard with a pair of smartphones. AppTagHD via Hex3.
The original "toss an object for points" game is still one of the best. Official rules via Livestrong.
While normally played in a gym or on a basketball court, dodgeball can be easily adapted for backyard play. Official rules via Essortment.
When the temperature rises, it is time to break out the water guns. Geek Dad has an awesome roundup of all the best Super Soakers available these days.
If you want a little less water warfare, check out this awesome DIY water playset from Mom Endeavors.
Sometimes you don't need any equipment at all to have a good time. Send the kids on a scavenger hunt around the yard. Free printable from Hands On As We Grow.
This toss game is especially great for little ones. DIY tutorial via Mom Endeavors.
This is a fun new variation on a couple of classics. It combines the rules of horseshoes and bocce ball to make a whole new game. Get your own set from Rollors.
Another great board game supersized---the kids will get a kick out of this giant ball-drop game. DIY Tutorial via All Parenting.
Spikeball takes the game of volleyball and compresses it down to a tiny trampoline sized net. More info via Spikeball.
One man's awesome idea for a variation on ladder golf to combine it with the rules of baseball. DIY Instructions via Tossing Games.
With World Cup fever still going strong, every little kid will be wanting to play soccer all summer long. Make your own PVC pipe goal with instructions from This Old House.
Skeeball + basketball + horseshoes = tons of fun. Full tutorial from This Old House.