Bouncing Betty Pen

In the Vietnam War there was a booby trap device called Bouncing Betty (M164A2) which was a mine that leapt into the air when triggered before exploding. It was based on the World War 2 German S-mine.

Its ability to unexpectedly leap into the air is what gives Bouncing Betty Pen its name.

I'm very particular about other people using my pens, which I also constantly misplace and have to search for, so this idea adresses both of these issues.

Bouncing Betty Pen's main attribute is a strong springing out leg feature that causes it to ascend noisily into the air, or across a horizontal surface depending on where it has been left. This action is triggered by a signal sent from a mobile phone app with which the pen has previously been paired. Any pen can be fitted into the Bouncing Betty Pen holder and the powerful spring manually compressed, ready to be unleashed. The action/mechanism is simple. The spring remains locked in place until the signal is received from the phone.

Now when you have lost your precious pen, all you need do is trigger its Bouncing Betty action using your phone. Its powerful spring will cause it to explosively become airborne, activate a flashing led and emit a very annoying whining sound.