Here are two tips from Russian bloggers that were pretty popular in Russia, and might be of some use for someone not in Russia too. Both of them involve computers in some bit not common way.
The first one is about how the small-sized laptop could be used to check if your microwave oven has enough shielding to protect you from dangerous microwave radiation.
To check this you need to get a laptop that can fit your oven, the laptop should support wi-fi too. As author says the microwave shielding should not let wi-fi signals to reach the computer placed in the oven too, thus placing it inside, then closing the door and trying to ping your hidden-in-the-oven pc (it might be mac probably too) would tell you if you are fairly protected each time you warm up your dish.
In this guy’s case he has nice microwave that shuts down any wifi for the laptop inside so the pings don’t reach it.
“Don’t try to turn your microwave on, while experiment”, warns the author.
The second trick might be of use to those lucky guys who going to visit Russia someday and travel Russia by train. In Russia trains are not equipped with electricity outlets, but railroad trips sometimes last a few days in Russia, when you go for a reasonable distance, so you might suffer a lot staying totally disconnected with your laptop battery drained to zero.
So not to let this happen, one might try performing this. In typical train cars there are usually such lamps above the bed, that used for a small reading lightning purposes.
One can try accurately disasemmble the lamp, which author says, is just very easy.
And then, take of the bulb from its nesting.
The structure of this lamp is occasionally (or maybe intentionally, for just in case purposes) is made in such way that reminds the European outlet and the cord of notebook can be easily plugged in.
Also, the voltage is 110v in Russian trains, but it should be enough for any modern notebook, because they are being shipped with double adaptors that can work in Europe at 220-240v and in USA with 110v just by changing the plug.