BookWidgets - BookWidgets is an excellent application that let you create engaging exercises in minutes and easily share a varied variety of beautiful and fun activities with your classroom and others.
Give Back Box - Reuse your Amazon shipping boxes to donate to Goodwill®
Padlet - Visual boards for organizing anything.
Resynth - Relax, remix and restore with Resynth, a minimal musical puzzler.
Socrative - Socrative helps teachers engage the class with educational activities to measure and visualize...
Brick or Potato - Anonymously send someone a brick or a potato.