I went on a solo trip to WDW in 2006, and determined that I was going to buy a pin for every attraction I went on, and also pins shaped like the Mickey head logo. I was not a pin collector then, and am not a pin collector now. Don't know why it became so important to me that trip, but I bought something like two dozen pins *at least,* it might be more. I usually have my sister with me, who is a very sensible person who will say, "what do you need that for?" and reign me in but this trip I had nobody to stop me. I just bought them and bought them, and now they're in a tin on my bookcase. I don't even display them. I'd actually like to sell them, because I'm sure there are some rare ones in the pile.
This is one of the reasons why shortly afterwards my money was put in charge of a representative payee. I will spend like a billionaire without someone to dole it out on the basis of what I want it for.