Here's a tool I made for me and Shawn's weekly Realtalk sessions that I hope will be generally useful!

You can grab a copy from Distant minimap (37608) and Distant page (37607)

Some notes I forgot to mention in the video — Shawn and I tested a prototype of this the other day and it streamed illuminations as smoothly as you see here on my local network! It only properly handles a single distant supporter in this edition (I think multiples will just overlap on the minimap); I know how I want to make it work for multiple supporters but I already had it perfectly squeezed down to 53 lines for a landscape 8.5x11 page haha. And it would be good to add a toggle of some kind to let the distant site opt-in to letting people peep their pages, but I trust us to be polite : )