Rocketbook Wave – Smart Notebook for $27
Rocketbook has come with an interesting concept. These new smart notebooks can be erased just by microwaving them. You can reuse them up to 5 times. In addition to this, rocketbook wave has all the traditional features of a smart notebook like app support, move files to the cloud, and instant access.
They are the world’s first company to bring up microwave clean for immediate re-usability.