One of my characters was a halfling thief who wanted to set up a spell component and alchemical supply business. Part of his equipment was a donkey carrying empty boxes, bags, and jars, and he would collect 'samples' of just about everything in the dungeon. If you ever needed a pint of orc's blood, a handful of troglodyte scales, or a ground-up onyx, he was your go-to guyMy druid would take trophies for talismans, which was more of a "cool list on my character sheet" than anything else.