The instantly recognizable pastel Monopoly banknotes, sold as a replacement stack to restock a well-loved game.
This is the money you picture when someone says board game, and that is exactly its lane. The pastel $1-to-$500 Monopoly denominations bear zero resemblance to real currency, which makes it the most legal-safe fake money you can buy and completely useless for anything but the tabletop. It is thin game paper, so a replacement pack is the fix when the original set goes missing or ragged. Skip it entirely if you want money that reads as real or teaches actual U.S. denominations.