Storing energy with flywheels instead of batteries. This is not a new idea, but i just put it on here so you are aware of it.

Time reversed waves to detect defects in materials and earth quakes

Leopold - this reminded me your lunch the other day. some interesting science too :)

read this

I'm not sure if meta materials can be used to enhance lasers in space........Leopold

Amoebae Anticipate Periodic Events

My favorite is the "Device to Sense if a Pedestrian Was Hit by a car" invention

can we get one of these for the office?

Here is the tractor beam I mentioned from fridays science coffee. At the moment its used for microscopic particles only. This could be looked into to see if it could be scaled up to deflect particles in space