$2 bills

And yes, you can get as many $2 bills as you want at the bank. And for some reason many people save or collect $2 bills - maybe in 30 to 40 years they might be worth something. A few comments I have heard when spending them... "WOW, have they started printed them again" " I have to ask my manager if we take these coupons" "Sir!, We do not take $2 bills" AND, I have even had a few people want to buy them off me while standing in line.

en.wikipedia.org/wiki/United_States_two-dollar_bill