How about a Back to School Sale at TpT? August 18th-19th use the code BTS13 to get up to 28% off. I am already stocking up my wishlist with some new items from some of my favorite TpT authors!
Of course, there is The Science Penguin Weekly Warm-Ups. I already have the first set, and now I need the second!
The Rachel Paper Collection and Lab Equipment Clip Art by Ashley Hughes matches my robot theme so well! I will have to have that!
Scientific Method Measurement Task Cards by Lisa Michalek
What are you going to get?