I’ve got $20 in one dollar bills. What can I do?
I’m not proud. You can send it to me.
Go see the Chippendales! You’ve got g-string money!
VERY small loan
Coffee and a tip
Short cap ride
Hamburger from Wendy’s
100 pieces of penny candy
strip bar
1/3 a gallon of gas
Now that you’ve got it changed into singles, roll around in it like this…"Oh my money…"
Take over the world.
Nah. I’ve got a lab rat that will do it for free. 
Track them after spending them.
Make a collage.
You could take them places and exchange them for merchandise and services. Most places take them directly these days. Trivia tidbit: they make them with other numbers too. I have seen people have ones marked $5, $10, $20, $50, and $100. Someone even showed me some funny money ( ) once that said $2. Lots of people collect those coupons these days it seems which I find sad because hardly anyone wants to barter. Instead they feed their obsession of collecting some of every set in the series to show off. I am not sure how you would find someone willing to collect twenty of those at once. However, if you spend a week quietly trading them for things, no one will be the wiser.
Make sure you’re naked when you do this (shower afterward).
I like this. Make a bunch of origami people, trample them like Godzilla, then roll on them. Followed by cookies, juice and a long nap in a rubber room. 
Cute! Here’s a $1 moneygami of my own, the classic flapping crane.
Spend it. Everytime you pull out the wad, say “Who said those dance classes wouldn’t pay off?”
- Exchange them for Euros.
- Fly to Paris.
- Have a very small lunch.
My brother!
Make a little papier-maché statue of Donald Trump.
Go somewhere nice and buy underwear or something with them. Be sure to mention something about your night job paying off.
This works especially well if the underwear is a g-string.