I was writing a manifesto but haven't gotten finished because my practice has been changing so rapidly (e.g. I talked about all kinds of problems that I used to have but felt like I had to fix them instead of complain about them publicly)

There are 48 of them on the wall opposite my workstation

https://gen5.info/$/XQ*42RXF-TLY:$B.8/

there is a placard which links to that URL. Those are 8 inch squares and it covers 30% or so of the wall so it has a major effect on radiative transfer in the room. I had to replace many of the images with less bright images because the effect was uncomfortable and unsuitable for a video conferencing background.