My latest craft project is making these little books that look like matchbooks. It is a quick project you could make with any kind of cardstock. Of course, my students wanted my samples, but I have to make two dozen more before there is enough for everyone. They would make really cute party favors or something to tuck into a note. I suppose you could put one in your purse so you had something to write a quick note on, too.
The directions came from the book on the right, Making Mini Books by Kathleen McCafferty, though I changed them to fit me...I wasn't completely satisfied with the directions, but if you are a crafter, you would be able to figure it out. There are a couple more projects in the book I may try some day, but for now I had to return the book to the library so someone else could use it.