For the Castle room? we could build these out of kleenex and tp or pt rolls to decorate the tops of the shelves. We could also make this a kid competition, collaborating with math and art. Top 5 displayed in the Fair.
Irena Sendler got permission to work in a Warsaw Ghetto as a plumber. She courageously smuggled babies in her tool box and carried larger children in a sack. She trained her dog to bark when Nazis were near. She saved 2500 children.