This chair could be used on the beach or when taking a sun-bath. The initial position (angle) could be set, and then it changes automatically, according to the intensity of the sunrays and the body position.

A special kind of paper could be made to produce appropriate light when connected to low voltage electricity (6 volts). This kind of paper could be used to cover the walls (wall-paper) of apartments , especially places where there is not enough light.

I am thinking of making an earplug that passes on specific sounds and doesn't allow the other sounds to be heared. This device has a switch to adjust special frequencies of sounds, and if they are the same the sound passes and can be heard. This device can be very helpful when two or more sounds are mixed and you can not distinguish the one you want to hear.