You can get quarters for laundry directly from the bank. If you don't have an account there, you can take a $10 roll directly. this is easy
Grocery Store
You can go to the grocery store and ask the cashier for quarters. He will check it for you. It is easy to get quarters there. It may also be near a laundromat.
Restaurants
You can get quarters by visiting a fast food restaurant. Here you can get quarters by ordering something. it may be near your home
Arcades
Go there and exchange cash for coins at the change machine. This is also a way to get quarters for laundry.
Gas Stations
You can ask for quarters by visiting the cash counter of the store attached to the gas station. You will definitely be found there and you will be able to wash your clothes.
Pharmacies
You can also get quarters from the pharmacy, by going there you can buy some small thing or any thing you need. This is also an easy option.
Vending Machines
You can expect a few quarters in return for your remaining bills. As such, you can put down $5 to pay for a $1 snack and get 16 quarters back.
Libraries
You can go to the libraries and ask for quarters. Because many people come to read books, whose bills are less. So they give quarters.
Big Stores
You can also get quarters for laundry by going to big box stores like Target and Walmart. There definitely everyone gets quarters.
MORE IDEAS
Can go to Bowling Alley, Street Performers, Car Wash. Have you checked your piggy bank? From there also, you can get the quarter from home.