I've always been a collector (accumulator:rolleyes). I lack focus when it comes to buying "stuff". Over the years my interests have been, military & sci-fi model kits, non-sport cards (movie & tv sets, boxes, wax packs), character glasses, military gear, toys, toys, toys mostly action figures from 60's, 70's, 80's, megos, gi joe, star wars from back in the day, etc., current sideshow and other 1/6 figures, laser discs then dvd's (but now I use Netflix more than purchasing), replica or deactivated firearms.
Oh yea, props. I don't have any screen used but I have the standard fx armor. In progress E-11(years in the making:lol), denix mausers, mg-15, mg34 all awaiting parts attachments. Various resin kits.
I bought several things from Marco in the early 80's, use to drool over their catalogs :thumbsup.
I hardly ever sell or unload anything, ask my wife! That means lots of storage totes! Someone above mentioned havng old computers, I still have my Apple IIc I bought in the showroom in 1986. 9" monochorme green monitor, tractor feed printer, $1200:eek.
Steven