Keep a constant level of light in your room even as natural light changes.
Similar to auto brightness on a smartphone or tablet, have sensor based input adjust the level of room lighting based on the sensed level of light.
Switch the paradigm for better health.
Instead of you going to the doctor when you decide that you must go, your doctor decides when to come to you. You will be equipped with multiple sensing devices that either work automatically (heart beat, temperature), or you will need to use daily (blood pressure). The doctor will get a daily report and decide if he needs to come over. As sensing devices develop, the reporting would be more accurate, and the Doctor’s proactive involvement will be more precise.
Help you protect your kids from drowning.
A swimming cap with sensors and communication unit. When the cap is underwater for a longer period (more than a few seconds), you get an alert on your device (smartphone, special receiver, etc.), so you can check on your child to make sure all is ok.
It’s a bore to lock and unlock your bike, especially if you use it a lot.
Have sensors that activate when your bike is at rest and pressure on the wheels/tires is reduces (bike is being lifted.) or bike is in movement. When you park your bicycle, just turn on the system, and if someone tries to lift or move the bike, a loud alarm is activated.
No need to guess if you need to water it or if it needs some additives etc.
Have a small gadget that you can stick in your pot or garden near the plant. You program it with the kind of plant it is monitoring and using the built-in sensors it will continuously monitor the soil and show you on a tiny display what you need to do.