In my younger days and when I was struggling financially after buying a property I did overdo the keeping of just in case items.
These days it's very much the case of not keeping too much of things I'm unlikely to use again and periodically going through and disposing of items I haven't used in years. Anything that may be of use to someone else either gets displayed on my front garden driveway with a 'free, help yourself' sign or gets advertised as free* on social media, but then goes to the tip if I'm still left with it for a week.
*I sometimes will put a nominal £5/£10 price if the item is potentially worth a lot more but my main aim is to pass it on after I have stopped using it.