Being F2P, I can't really afford to be sentimental, although I held onto my blurite sword way too long (recently dropped). Aside from that, I used to train on the lesser demon in Melzar's maze (I enjoy solitude), and at one point I'd collected a couple hundred of those green keys. No real reason. They're untradable, so I couldn't even show them off. I just felt compelled to save them, like a hunter collecting antlers as trophies. :-P I eventually dropped them (one at a time, as they can't be noted) for that precious bank slot. I also watched many questers die and lose some relatively decent items (from their perspective at least), and I always messaged them and gave it all back. That's just how I roll. The gratitude I received was always worth more than their value in gold anyway. :-)