Out of all the projects my favorite were always  educational games. They are designed for museum kiosks and aimed to educate kids in a fun  way. 

“Ancient Technologies”: try to build a raft, a tent and make a fire using only the technologies known in the Stone Age.
Feel like a paleontologist reconstructing the skeletons of prehistoric animals.
“Feed the Bear”: learn what man and animals eat in Siberia.
Try to figure out what the objects are used for in Siberian tribes.