Colleen Graves (@gravescolleen) shared some pictures on Twitter a few days ago that showed prototypes she was making of a library data tracker and a classroom exit ticket tracker. Both use the Makey Makey along with some minimal Scratch programming. I begged for some more details, and she has released the instructions here. (That sentence makes it sound like she only published the directions because I asked, but I’m pretty sure the two events just happened in chronological order because Colleen planned it that way – not because I have the power to demand anyone to explain things in detail just so I can copy their ideas.)
Colleen, by the way, is now the Content Creator/Director of Community and Creative Content at Makey Makey. She has already authored a few books, one of which is 20 Makey Makey Projects for the Evil Genius. For one of my posts that curated links of creative ways to use the Makey Makey, click here. You also might enjoy this one about interactive onomatopeia.