What do you just have to keep ?

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.
Yup. It's tough to get around and actually let it go. Although I chunk things MUCH easier than Kitty. She still has dishes and whatnots that the cats knocked and broke YEARS ago in boxes that she will NOT throw away......and I'm talkin about stuff broken so badly, in so many small pieces no amount of super glue genius will ever put it back together. LOL