Disclaimer: I am not a fabulous seamstress. I can operate a sewing machine and make straight-ish lines. This Tutorial originated because I sewed my own chair pockets when I went back in the classroom, and I needed it to be cheap!
If I decide to do chairs again some day, I would do this to hold music folders, recorders and recorder books as well as pencils. This would be handy and much easier when needing to do a worksheet or a written quiz