I don't know about you, nor do I know what this says about me... But I tend to collect things, gather up, say, a whole bunch of stuff that I categorize and divide in collections. And I have one of those memories that records multiple dimensions: I remember what you were wearing, what song was playing, the wrinkles of your smile, the detail of your prose, the tone of your voice and the exact date of when, and where, something happened... So, of course, I collect memories that I often share, like a slideshow of things we share, that we won't lose, either of us... except that, well, I'll be the one who'll keep track of things.
I collect pairs of glasses, because I like them but mostly because I lose things and therefore back up this crucial accesory that helps me see. I've even got some broken ones that I've yet to get rid of or fix, either or; amonst that big rimmed, rectangles, cat-eye, wayfarer, or what-have.you spectacles. Since I was 14, the bookworm that lives in me collects bookmarks -- which is ironic, seeing as I always end up using a receipt as a bookmark, never having one at hand. But there they are, my stash of eclectic bookmarks. You'd be surprised at what you'd find there...
My notebooks, something that I'd try and take away with me if ever my house caught fire. "Patty" Nathalie said, "You should make space for all of your notebooks, you need them", when I was packing, when I moved from France to El Salvador. A lot of things did not make it to the suitcase, but my notebooks and papers -- "files"-- sure did.
I also collect little black dresses. It happened unvoluntarily: one day I realized I owned quite a few, and I love them all. "I don't know what dress to wear. Should I wear the black one, the blac one, or that other black one?" But it is not nearly as odd as owning quite a few robes. There's the plaid one, the white silky one that reminds me of some 50's Hollywood starlett, the paisly satin one, the mint green one for when I get out of the shower... And I used to have a flannel one, a red fleece one -- both great for a winter Christmas, and terrible for tropical weather here in El Salvador... The purpose of a robe being "I don't want to get dressed, but I don't want you to see that I'm undressed." Make sense, if you ask me.