In downtown Oklahoma City, where the parking meter was invented, a quarter will rent a space at the curb for 15 minutes.
Drop a quarter in one of Oklahoma's ever-increasing numbers of slot machines and you may boost your buying power dramatically.
As long as you're gambling, you might buy one share of one Oklahoma's beaten-down stocks, such as AMS Health Sciences. The Oklahoma City company is in bankruptcy, but still a going concern, and trading for 4 cents a share (additional commissions and fees almost certainly will apply).
If you can find a penny somewhere, it and a quarter will get you a postcard.
Some vending machines will provide a piece of gum, candy or trinket for a quarter, although the numbers of such machines are small and shrinking.
"A piece of candy,” the owner of Oklahoma Vending Co. said. "That would be literally the only thing I can think of.”
The local cafeteria will part with a cup of ice in exchange for a quarter. You might be able to find some kids selling lemonade for two bits, but it's not likely (certainly not during the last week of January).
But we shouldn't be surprised.