I am so afraid this is going to be me, because other than holiday decorating, I do this with everything. Right now all my holiday stuff for every holiday, Halloween, Christmas, Easter, etc etc is all in the crawlspace under the stairs. This is possible because I didn't have many large props. I used to store other things in there, but it's grown enough in the last 5 years that I can't, there isn't room. But now I MAKE larger props. I made two fair sized tombstones last year, I've got three in various states of completion behind me right now, and I have hopeful plans of more. I also have some larger props I'm planning for Christmas, and the crawlspace is busting at the seams already. I'm going to have to start storing things elsewhere if not this year then next, and then I'll never remember where the heck anything is.