Flimsies

Flimsies are a type of bingo cards printed on thin sheets of paper. They are typically printed with three cards on a single sheet, but also come in other formats:
 * One card per sheet
 * Two cards per sheet
 * Four cards per sheet
 * Six cards per sheet
 * Nine cards per sheet

Flimsies costs $1–$2 per sheet and a win on a flimsy on a "special" game usually pays quite a bit more than a win on a "regular" game.

They are also known as flimsy sheets or throwaways.