If I had time I'd make some for you Too many issues/problems and zero time
Haha no worries. I like making stuff anyway so I'm kind of looking forward to making them.

As I have plans to use the outer, rectangular bellows myself, I might have a go at taking the body apart tomorrow. I will let you know what I find. I suspect that the internal dimensions are at least 2.25" square.
Definitely let me know when you get it all taken apart. Thanks!