fire department. Police department involving the kids.

farm safety,4H to run a petting zoo and calves in pens.

could be at airport for parking space. Involve flying club to show kids planes.

Old car, motor bike show, career stand for country kids to stay in flagstaff.

food area and please, please, enough toilets!!! 

Just an idea to mull over and discuss. Hope it helps in some small way. Thank you for asking.