Teachers pay Teachers is also having a fun event on Sunday. Lots of stores including mine will be giving 28% off ALL their products. I have been using my Wish List to bookmark things I want to buy on Sunday. Then all I need to do on Sunday is toss those items into my checkout cart.
If you decide to purchase anything yourself, don't forget to enter the code "SUPER" so you will get the full discount.
Here's a link to my store. Hope you'll have a chance to look around.