I want to have a battery charger to recharge standard alkaline batteries. This will keep them from the landfill for a little while longer. The charger will use a microprocessor to control the trickle charge and prevent overheating and will be able to charge both AA and AAA batteries. The charging cycle will take about 4 hours depending upon the quality of the battery and amount of charge left in it. The device will also recharge Ni-CD, Ni-MH, and RAM batteries by automatically...

I travel a lot and often use my digital camera to take pictures of landmarks and the landscape. All the pictures are time stamped to tell me when they are taken but there is no information on where they are taken. I think that building GPS system into cameras could be cool. This will help to store the location, direction and possibly the pitch and also will add more life to the pictures. By the way, it may be possible to create a 3D map using this technique in future.

I want an audio file on my phone which will frighten off mosquitos within a radius of 3.5 feet. A human won't hear anything but mosquitos will. The sound will be similar to the buzz of mosquito male which mosquito female try to stay away from.

My idea is to create a mobile application integrated with a database of public lavatories within a city/country/state/etc. After you define your location the application will return the list of the nearest lavatories. It seems to be very convenient. By the way, the database should be updated on a daily basis.

I've just found out that there was a microbial fuel cell based charger developed. It can allow cell phones to draw their power from the dirt. The device uses a conductive surface that is able to harness the free electrons that are created by soil microbes during their metabolic process. Plans are to distribute the charging device in Sub-Saharan Africa, where many people have cell phones but lack power in their homes to charge them.

Why not take into account bone conduction phenomenon and create a telephone for hearing impaired people? The handset in such a case will have a pulsator which, when placed on specific areas of the head, will send vibrations directly to the speech center of the brain. The phone will also include a light to indicate an incoming call and different volume controls.

It would be great if someone invented a holographic TV. There everything you see would be projected creating a feeling as if it was actually there.

I want to create a mobile phone application for those who don't want to waste time standing in line. One will have a possibility to check as well post line conditions with the app running on a mobile phone.

My idea is to create a mobile device which can be used by deaf and hearing-impaired people. I suggest creating a tool which would be integrated to any high-end mobile phone with a video camera. The tool would be based on motion detection technology, i.e. it would be possible to identify American Sign Language (ASL) and transmit video images over cell networks in the US.

I often can't remember where I have left the TV remote control and look for it all over the room. So I suggest creating some device which is placed on the TV and makes the remote control beep when I need to find it. The functionality seems to be similar to the one which wireless phones have.