The first law of throwing away redundant kit

The first law of throwing away redundant kit states:

"Within 24 hours of deciding categorically that piece of kit will never ever in a million years be of any use, you will be rummaging around in the bin for it".

Corollary: As a result of keeping everything, you will be rummaging around forever for something, never find it, and buy a new one anyway.

And then the one you knew you had all along immediately comes out of hiding.

Unless you simply categorize and file it properly in a nice bin system, in which case you can use a simple search algorithm to find anything anywhere anytime. Label! labe! label!
My common search algorythm is still my brain, but I wrote the labels, and I periodically inspect the bins =)