I have a lot of plants and fish and a pet lizard and Venus flytraps. I have a whole ecosystem in my room like a running waterfall and different lights and sensors set on digital timers.

Lighter computers and lighter sensors would let you have more function in a given weight which is very important if you are launching things into space and you have to pay by the pound to put things there.

Parking is a nightmare for me... I still have sensors on my car that help me park.