Most banks will have a brick of $2 bills - often new, with consecutive serial numbers. When I traveled for work, I loved tipping with these fresh bills. Some folks would wonder if it was real. Some would think I just handed them a collectable silver certificate. Most important, both Bride and child were too embarrassed to spend them - so they could just be left on my desk.

The tooth fairy at our house is notorious for using a combination of $2 bills and $1 coins