Hi Rob,
I only started looking at your "What is its?" maybe a year ago and I haven't dug through all of the old postings just yet. But... if you need or want some stuff to use I'm sure I have some un-posted items around.
That was how I ended up looking/finding "What is its?". I had a strange tool whose purpose eluded me at the time. I've since figured out what it's for though.
I have been enjoying your exercise in sleuthing, keep me in mind if you need some stuff :)