We had some bright blue metallic wrapping paper so we made Qs from it and taped on the inside of the vehicles front windshield and rear or side windows with good tape. Worked well. Want to make a WWG1WGA but too hard to cut out, we’ll have to print a couple and tape on. We’re penny pinchers out of necessity and it’s a habit.
NOt a thing wrong with pinching a penny!
You can get packs of adhesive letters in the hobby section at Walmart. Different sizes and colors. I used the to put "Sic Semper Tyrannous" in the back window of my truck the day Barry was inaugurated. They are still there.