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".
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 =)