This "fort" has been so much fun for my kids and me! I don't know why I didn't think to add a fan sooner.
How to Make a Fan Fort! #kidactivities
OMG I pinning this because really I want to do it, but you could have fun with Jacob too. :-)
How to make an Air Fort (of awesomeness!) - Preschool Activities and Printables
All for the Boys - Fan Fort / Bubble
Her mit der kühlen Luft! http://www.pinksugarland.com/wordpress/wp-content/uploads/2013/07/07031.jpg
Fan Fort This fort is such a thrilling novelty! Grab a sheet, a duvet cover or a light blanket, and a simple window fan. Turn on the fan, and you’ve got an instant inflatable fort! How fun and exciting!
The Fan Fort
How to Make a Fan Fort: 6 Steps (with Pictures) - wikiHow