Good question. I usually only take smaller things that fit on my shelves or in bins. The medium sized stuff must be good/faster sellers to warrant the space. If it's really large, I have a storage unit nearby. If it's really big, but not worth the legwork and injury risk to transport it, I circle back to taking small parts from it to at least make some impact.

I also take many things I uncover out and leave them in plain sight for someone to take later. For example, I had a nice warm winter jacket in my hands a few weeks ago and decided to leave it out in view. 60 seconds later, a homeless man walked by me and took it. Another example I saw was a pair of vintage paintings I pulled out of a bag. I took one and left the other leaning on a tree. Then two women walked by me with it minutes later. Can't put a price on that reward. I also take some things to a thrift store nearby.

My apt definitely is full of shelves and sections for inventory (and operations) vs things I personally own, but it's a necessity at this time to allow me to not work for anyone else since quitting my corporate job 5.5 years ago.

Most things sell in a reasonable timeframe. If not, I drop the price a lot or part it out.