Sounds like you accomplished what you planned - and I have seen the styrofoam microbeads around here when I need a sturdy support in a box and must break or cut large pieces to work.
A tip if no other sources are nearby - you can buy boxes online from UHaul and you'd be surprised at the number of sizes and shapes they have. Factor it into sales, of course, and have it ahead of listing. I bought a dozen in a couple of long and low sizes to pack vintage VHS players in. It was easier than waiting for the right size box to come along. These days I go down to the village recycle bins and look to see what sizes have been dropped in (usually not flattened out).
Charmion, how are your windows looking now? Dorothy, how is your puttering around the cottage at Beaver going?
I have officially turned that spider corner into prime real estate for Ms. Argiope. I stepped out on the porch this evening and after a couple of minutes a Junebug bopped along. I caught it and tossed it into the web; I was going to take a photo and in the 15 seconds it took to pull the phone from my pocket and bring up the camera app she already had that bug fully bound. The bug is still alive - last I saw the two of them she was hovering around and the bug was kicking through the sticky layers.
More of the den has been scrubbed, so easy with that battery operated big spinning brush.
I know the next nine days here are going to feel like your styrofoam storm is running through my life; cat sitting begins and there are a number of other appointments sprinkled through the week.
I'm taking a weekend (at least) off from any politics and I set up FB with a filter to block names and events. If you use Facebook Purity (download from this site, not the Chrome extension store where there are some fakes) you can filter keywords from your newsfeed. I set that up and compared Chrome (with the filters) to Firfox and there is a big difference. It just doesn't let the political stuff load. (On FB itself they refer to themselves as "Fluff Busting Purity" because FB blocks any references to their actual name. It's an odd arrangement, but it works.)