M.K.
The Children First Academy in Tempe is a school for homeless children and I'm sure they're always accepting school supplies. http://cfatempe.org/. My childrens' school does an event for them in February giving not only school supplies but also personal items, toothpaste, shampoo, etc. and small toys (remember no batteries-they're not going to get replaced). And giving to less fortunate children is something kids can understand. Sounds like a great party for your daughter inviting the whole class, have fun!