A system could be devised where people could, for example, customize their profiles with an X amount of plushies, where the X is relative to the amount of posts they've made (or a better gradation would be the total size of posts, i.e. how much they've actually typed slash contributed, or the average size per post, whatever). Similarly, they'd have to have an X amount of posts (or word count, or average) to be able to use Y plushie, or do something to unlock a certain group of plushies.
All cute, but that's probably even more complex than a shop system,
. If I had the time and motivation to do it, I'd do it, but right now I have neither, and I doubt we've got people that are able to do it,
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