I take a big shoebox and I paint it with craft paint, then I write the name of the show on top of the lid. I also take one flower from a boquet and I hang it upside down to dy it out. Then I'll take things from the show like a piece of the set, programs, small momentos from backstage, and I put in something that represents my part. I was recently in Beauty And The Beast and I played a wolf. In my box I put a piece of the castle set that the whole cast signed, a plastic rose, a dried flower, a program that everyone signed, an empty bottle of hairspray(from backstage), a minature statue of a wolf, a notebook with Belle on the front, a pen in the shape of a rose, a picture of all of the wolves, and a small bag that all of the wolves got that had chocolate in it. It was called "Wolf Food", but I ate the chocolate first. Doing something like this will make it last forever. Every time you come across the box and open it up and find all the stuff, you will remember all those practices and inside jokes that went on backstage. This way you will never loose any of the memories from the show that you worked so hard to perform. Good luck
<--Sometimes it's easier to get out of a jam than into one