The only things that I hoard are tools and bicycle/climbing/outdoors equipment. I have been steadily accumulating all of these. I've out grown my single tool box so that I now have a around the house tool box and a bicycle tool box. I have 2 bicycles inside and a beater locked up outside. A bike pump and random parts. I have 2 tents, 2 sleeping bags, camping stove, random camping equipment, snow shoes, trekking poles, 2 backpacks, climbing gear, ice axes, 2 pairs of mountaineering boots, ropes, crampons, helmets. I also have a handful of books and magazines that I really enjoy. After these things, I consider everything else I own to be just "stuff" that I could easily get rid of if needed.

I feel like the things that I want to keep are the things that I invested the most effort in acquiring. For example, with bikes and gear, I would scour craigslist, kijiji, web forums, read every review, check every deal and internet store, and get exactly what I want at the lowest price possible. I think I sometimes go a bit overboard in this respect, but I get a lot of enjoyment from the process in the end, maybe even more than from cycling or whatever activity it's for.

If I just go to the dollar store and pick up some glasses or plates, I would have no trouble sending them to the thrift store at the drop of a hat.