This is a cool thing you can do with just a clothes pin, a piece of paper, glue, and some markers! Take the clothes pin and write," You have a message" on the side as shown in the picture. Then design your own envelope where I have drawn it. Take your piece of paper and write a message to someone. Finnally, glue both ends as seen in the picture and vuala! You have a message!
I love this system of "filing" clothes. I do it for my shirts, PJs and jeans. Never thought about doing this for undergarments, but I think I'll start doing it for them, too! Click for a summary of how to fold tons o' stuff!