Do you check pockets of clothing before getting rid of it? And are you ever glad you did?

I do, it is part of my process before tossing or donating. I was throwing away husband’s well used ski jacket (he hadn’t worn it in 10 years and it had a broken main zipper). This item had to break the record in number of pockets: 15! Plus two zips that I thought were pockets but were actually openings for ventilation. I found a small scrap of dirtied flannel, which was used for wiping ski goggles and a handkerchief.