wAn old phone in a drawer or almirah can ignite without indication and culminate in a devastating fire.
A swelling phone's lithium battery has the potential to crack or even destroy the glass, case or box.
Charging a selling battery can initiate a conflagration or explosion.
An outdated router without the latest secure options like WPA3, WPA2-PSK AES can encourage hackers/cyber criminals to loot your bank money.
Old electrical extensions or extenders can damage your computer, mobile and other electronic gadgets when they blow-off.
There are many more old gadgets and other things that can cause unexpected stress and put you in trouble. Catalog them to either dump or sell.