I collect (or rather used to) GWTW movie memorabilia. Before the boys came along, I purchased quite a few original pieces - and a few are even rare. I have an original movie program from 1939 in mint condition, a black & white still publicity photo from 1940 (only 120 were produced), a poster out of a warehouse in South America that I paid $15 for and was offered WAY more than that for it about a month after I bought it, and an original movie poster from 1954 that has a purple background. I have other original pieces but these I've listed are the rare things I have - I have books, other posters, movie stills, lobby cards, dolls, figurines, and music boxes. I still look for GWTW things to add to my collection. Right now, I'm adding the Hallmark Christmas Ornaments to my collection - missed out on last year's ornament as our store only got like 6 in and by the time I got there, they were gone
So I'll check ebay for it one of these days.
I also was part of the "beanie baby" craze a few years ago and now have 3 plastic containers full of them in my attic (they are all sealed in plastic bags). I don't collect barbie but I do have some of mine from when I was little - my favorite is Hair Happenin Francie from 1970 - got her as a birthday present
And as a family, we've collected some NASCAR 1/24th scale cars.