Unfortunately, I don't collect anything cool or "genius", like those nerds who collect certificates from colleges and that nonsense.
I "collect" yugioh cards, but I really play more competitively. Not that I'm any good at it, but at least I make efforts to keep up with the metagame, strategies, etc. Really the only thing left that I still collect today.
I spent a lot of lego toys, specifically Bionicle, which has now been replaced. Granted I only bought 1-2 per year, but there were days when I would by 15 a year. I guess you would call it childish, but I don't give a damn. It's my private joy--no one can take that away. There is just so much potential. I'm looking into buying large scale sets of lego, but those bricks aren't as appealing to me as those larger, colorful, and amazingly detailed pieces. I have several boxfuls, but I cannot continue to collect due to the end of the series.
I also have a HUGE stuffed pokemon collection from when I was in mental deterioration and my mind was akin to one 5 years younger than my age. Lugia, Shadow Lugia, Deoxys, Pikachu (only big one,besides for Togepi), Groudon, Kyogre, Latias, Latios, Corsola, Bulbasaur, Poliwhirl, Egg things that evolve into exeggutor, mudkip, Larvitar, Hoppip, and a few more. I stopped collecting a while ago, though that Jumpluff plush is really tempting me. Oh, and I also have an enormous collection of Beanie Babies. Again, don't ask. I have not purchased a plushed toy for several years now.
I just moved so I don't have anything with me.
But I might be able to get pics up soon (and once I find out how to upload pics).