Printable Warning Signs for Cars
You've found a new area I'm working on, printable signs! This page of warning signs to stick on the rear window of cars is the first set, I hope you like them.
The instructions are very simple, download and print the pdf onto heavy paper or card stock at 100% zoom. Cut out the sign, punch a hole in the top center and stick to the rear window with a plastic suction cup.
If you don't have any suction cups handy, you could tape it to the window but that tends to break down very fast in bright sunlight or in cold weather so I really would recommend trying to find some suction cups. Many craft stores and dollar stores carry them and they're super useful for so many different projects they're well worth it.