Yesterday was our first back to school shopping day. Kid the Younger is very organized and likes to color code her subjects - same color notebook, folder/binder for a particular subject. Thankfully, this year she doesn't need anything much beyond those. Last year I had to do a lot of online browsing to get a good deal on a required Texas Instruments graphing calculator. I just checked it and this year Amazon is offering a a special price on the TI=84 Plus calculator exclusively for Prime members.
Speaking of Prime, one thing I recommend if you have a college-bound kid is the Amazon Prime Student free trial.
Unlike the regular Prime trial which is just for 1 month, Student Prime gives you a 6 month free trial. At the end of six months, if you wish to continue, you get a 50% discount on the regular Prime membership fee. It's very handy for shipping stuff to the kid, as we found with Kid the Elder.