TBH sound foam is probably the best storage option, because it will also help reduce the vibrations.
No ytong for me, unfortunately! At least, not that I can find commercially someplace like Home Depot/Lowe's/Ace Hardware etc. I found a lot of recipes for it, but I don't really want to make my own.
I'm not really looking for in drawer/closet/etc storage solutions with this, though. I'm looking for something that's more like a display rack. I've been keeping my more rare/sensitive queens locked away, but I have my tetramorium queens out to look at all the time. It helps me a lot with NOT looking in on the other ones too often, and also provides a conversation piece. Right now they're just secured in place with unbaked sculpey, but it would be nice to have a little display rack to keep them in instead. Something that looks a little more on purpose!
I contacted this Etsy seller to see if they could make a sideways rack, but no response yet. I've also contacted this Etsy seller, but they don't quite understand what I am asking for, so I need to draw them a picture! I like the way this one looks, but chances are the queen/brood happenings would be obscured in this design...
I wonder if that AC stand would tolerate being turned sideways and screwed to a wall or base that would hold it vertical?