USB gloves
I think everyone had such a situation when you still need to sit at the computer, and your hands are already frozen. That's what USB gloves are for. The nice thing is that there are two heated gloves - with open fingers and closed ones, and the temperature can be individually set for each glove separately.
Laser virtual keyboard
A very convenient and necessary novelty for people who type very often. The gadget connects via USB and reads every stroke of your finger on the surface. Unusual at first, but then it becomes very comfortable.
Flexible drum set
Great gadget for musicians. It can be connected to both tablets and laptops. Sound production for up to 50 types of drums. The installation itself looks like a mouse pad that easily rolls into a tube. Permissible rates - from 40 to 202 beats per minute.
Scissors with laser sight
This is an excellent way out of the situation when it is impossible to draw the line you need on the material for one reason or another. Now cutting is not exactly just impossible.