I have a book here that has a checklist.....here are som things you may want:
-hair spray
-spray deodorant
-walkman
-camera for backstage
-glue for heels (ya never know)
-chap stick - lips will get dry from all that smiling!
-scissors
-nail glue
-extra protan & brush
Actually another thing you can do for shoes if they are loose is cut the toe & heel off a pair of nylons and use the one part around the arch of your foot & the shoe to make sure it stays on.