Have you walked in to your local Wal-Mart in the last week or so? If not... it may just be the middle of July and school doesn't start until September (in my area) but the first thing to greet you when you walk in the store is back-to-school supplies. It never ceases to amaze me how the box stores push the seasons and occasions. The worst part is, if you wait you may not be able to buy what you need but for the most part you don't know what is actually needed until just before school starts.
I've always kept a "school supply" cabinet... this year my youngest is going off to college and going to a paperless school... it was weird to walk past all the school supplies. Knowing my daughter, I'm sure she'll need art and craft supplies even if she doesn't "need" paper. She makes incredible science projects.
One of the beauties of sewing is that the things you make tend to be more durable than store bought items that are mass-produced. You can use mass-production sewing techniques to sew school supplies. One year we made a pile of school supplies and donated them to a "fill the bus" campaign. It was a great feeling to know the items would be used by someone who really needed them.