Here is one I found when I googled it that I think are really cute and easy to make.
www.crazylittleprojects.com/2012/11/kids-crayon-coloring-book-carrier.html
I will have to make some of these for my grandkids.
Hope this helps!!!
I found this one and wanted to share this one, too.
www.foodstoragemoms.com/childrens-crayon-bag/
If you google it you will find more tutorials and youtube videos.