What kid doesn't dream of having a play structure in their backyard? Play structures are not only fun for kids but they also help build their motor skills, as well as their cognitive and social abilities. Play structures come in many different shapes and sizes with features such as slides, climbing structures, swings, teeter-totters and more. An increasingly popular addition to a play structure is an inflatable jumping room. You may want to start with one or two pieces and add features each year until your play structure becomes quite large. Fully loaded, brand name play structures cost about $2,500 online. Adding a jumping room will cost an additional $150.