During a presentation the user may, for example, move forward or backward through presentation slides by simply pushing the sideburns, i.e. by pushing the one or more buttons. Thus, the user can control the presentation slides simply by natural behavior like touching side burns. Additionally, the wearable computing device may comprise a laser pointer that is arranged in or on the wig. The laser pointer may, for example, be arranged on a forehead part of the wig, so that the user may point out relevant information on the projected slide in the above-explained presentation mode.

The compactness of the shield (due to the telescoping of the various sections) permits the owner thereof to easily carry it with him from place to place. Also, due to its compactness, it can be easily and unobtrusively stored in either the office or the home. When an alarm is sounded by civil defense authorities, civilians who have the described shield close at hand would be able to fit themselves with the shield in a very short period of time. A civilian thus outfitted could then place himself against the floor, the ground, or a vertical surface and wait until the explosion has occurred or the danger passed. The fact that each lower section telescopes with the section next above it enables the wearer to raise as many sections as may be necessary to permit walking or running in the event that the wearer is suddenly forced to abandon his position in favor of a safer one.

We constructed a mushroom-based air-cooling device, MycoCooler™, based on previous observations that mushrooms can cool the surrounding air via evaporative cooling. The device was made from a Styrofoam box with a 1-cm–diameter inlet aperture and a 2-cm–diameter outlet aperture. An exhaust fan was attached outside the outlet aperture to drive airflow in and out of the box. The MycoCooler™ was loaded with ~420 g of substrate-detached A. bisporus mushrooms, closed, and placed inside a larger Styrofoam box previously equilibrated inside a warm room (37.8 °C, <10% RH). The temperature inside the closed Styrofoam box decreased from 37.8 °C to 27.8 °C, 40 min after the addition of mushrooms, cooling at approximately 10 °C, at ~0.4 °C per min.