What do you just have to keep ?

My wife. My cats. Car parts I may use. My guitars. Most everything else is clutter. Somehow it's hard to turn loose. "They" say, (whoever they are) that if you don't use something for a year, to get rid of it. Yeah, ok.

If I don't use something for a year and then discard it.

That will instantly invoke "Murphy" and I will need it on approximately day 366-370.

...and then find that a replacement is either $500 or not available at any cost.