I have some old devices that I don't want to get rid of, such as video games, radio, recorder, etc. How should I keep them? Is it interesting to connect them now and then?
The biggest enemy of devices that must be stored for a long time is humidity. The recommendation is that they be placed in sealed packages containing silica gel or even rice (rice absorbs moisture). It must be ensured that the packaging is sealed. It should not be placed in a warm place and some sources recommend that the devices be switched on for at least 1 hour once every 6 months. However, not even all this care ensures that sensitive components, such as electrolytic capacitors, are altered with time out of use running out or starting to leak.
