If you think that an interactive mirror with LED display is too much for your pocket, think again. Some students from Chalmers University studying in the Department of Interaction Design, made this interactive mirror project. After trying some typical mirrors, they found out that a two-way mirror gives the best results for the LED display. Several Arduino boards are used for the LED displays, which can display the time, information about the weather and also have a..... toothbrush timer! An LDR detects the hand motion and scrolls through the modes. Here is an excellent documentation for this project.