The British Antarctic Survey has opened its big new operations facility.
https://www.bas.ac.uk/media-post/major-antarctic-operations-hub-switches-on-to-support-uk-polar-science/
Yesterday I went to a mad scientist meet up.
Unfortunately, while I did have a sign, before heading out, I realized it was unreadable without shade. The location was a large plaza at noon. So in the end, I had nothing more than my presence.
I expect there will be similar events in the future that I will feel obliged to attend. I'm considering getting some "outdoor" (1/4 or 1/8 scan) HUB75 style displays, or maybe a grid of multiple epaper displays?