A moving robot works to calculate ambient objects and gives an alarm when it exceeds a certain limit; can be controlled by the computer.
Origami Mask which require no glue or stapling. A4 paper and non latex silicon bands make a cheap and hygiene disposable mask.
An interesting way to communicate with your Android device through the NFC technology.
Put stars in your Pilgrim character's eyes
Learn how to make an Origami Polar Bear Lamp.
Papercraft electronic ornament.