Editable Teacher Binder (Freebie) on the most interesting site, Teachers pay Teachers, an open marketplace for educators. Offer up your great stuff for sale or find great, useful stuff created by other teachers.
PAID printable but has a neat test maker and lots of different worksheets year math, ELA, science, social studies, and seasonal tests/worksheets with an option to administer tests online (with auto-grading).
Did you know that it is SUPER easy to print on post-it notes? This tutorial will teach you how to print on sticky notes, provide you with a template to use, and give you a FREE set of fun and supportive notes to give your fellow teachers or students!