An old 2 litre plastic lemonade bottle was used with a microphone, this enabled the microphone to be lowered into air vents.

I built this device into a walking stick.

I built this device into a tennis ball. By attaching fishing wire to a tennis ball and gluing the unit inside, you have a device that can record both audio and video.

Inside a ball it makes it easy to get to places were normally it would be difficult to place a device.

This one can be thrown over a roof, into a field, thrown on the ground amongst trees and then recovered by simply pulling the finishing line.

The shape of the ball ensures it does not catch on anything on the way back.