When working in the home office becomes too stressful, doing something useless can help to relax. Build a Useless Box for instance.

The Useless Box is a robot finger in a box that switches itself off as soon as it is switched on. It comes as an easy-to-build kit of parts. Why build one? Because it is a fun gadget to have around.

Also, why must everything always be useful? The world is full of useless things and people love them. Mosquitos for instance are useless, yet there are plenty of them. But people don’t like mosquitos, so maybe it is not a good example? Anyway, a Useless Box is fun and relaxing, so it is a good enough excuse to waste some time on.