Make envelopes out of your old maps. Not only will this create a colorful envelope, but you will be amazed at how long people will study it to try to figure out what the map displays! Here's how to make the envelope:
Open an envelope at the seams to use as a pattern.
Copy on the WRONG side lightly and draw the envelope.
Your card can dictate the size as you get more proficient.
Glue at the folds with school glue.