@xianc78 how in the world do you get "don't collect anything" from the sin of lust....? If anything it would be greed, or maybe pride depending. But it could also be neither of those things depending on how you act or think about your collection. If collecting is something you do for a fun hobby or have some bigger goal like preservation, it's probably fine. If you're collecting intentionally to get things so that nobody else can have them, or you're doing it to stroke your own ego ("I'm better than you because I have a bigger collection!") that's where it would get into greed/pride territory.
I'd say it would only be considered lust if the prime directive for collecting was either sexual, or to advance in a hierarchy of power somehow. A child wanting an action figure probably doesn't qualify as either of those things.
I wouldn't think it was sinful to have a coin collection and dream of wanting the last coin in a series that you need to have a complete one, just to be excited about it. I don't think it's sinful for me to see an anime figure and think "that's pretty cool, I'd like to have that on my shelf!" I'm not collecting them for any reason other than I think they're cool to have.
@beardalaxy I confused "lust" and "greed".