@Downes hope they engage- & you get lots of different people, not from the same sort of place. they'll learn loads!
I do a thing where I give people string instruments (who have never played) & turn them into an orchestra- music as the metaphor/medium for communication/active learning/engaging (positive) failure/developing self-belief/real time problem solving/ & working across managerial levels, but I haven't figured out how to market it. but it's fun & I love it
Hope your thing goes well :)