The classic teach-money kit: roughly 150 coins and bills in a storage tray, tough enough to survive a semester of small hands.
If you are shopping play money to teach counting and making change, this is the default and it earns it. The set pairs plastic coins with color bills from $1 to $100 in a divided tray, so a lesson does not end with cash on the floor. It is honest novelty money: undersized, single-sided, and clearly a toy, which is exactly what you want in a classroom. Skip it if you need bills that read as real currency on camera; this is a teaching aid, not a prop for film or photography.