Also, the process is somewhat reversible: Retrobright
However:
The long-term effectiveness of these techniques is unclear. Some have discovered the yellowing reappears, and there are concerns that the process weakens and only bleaches the already damaged plastic.
There’s nothing dull about seeing a spectrograph working.
Edit: also, how come you can’t find a real hologram displayed in a museum?
Watching a beige box seems kind of dull.
I stood inside the grey box where the magic happens. It was not dull because there was a physicists explaining everything.
That’s a big box.
EDIT: I like the high tech foil.
Did scientists figure out how to keep the beige box from turning into a yellow box?
Don’t expose it to UV or excessive heat.
Also, the process is somewhat reversible: Retrobright
However:
Make the box transparent.
But seriously, all of those have older versions that don’t work as well but look absolutely cool.
If you’re gonna make it transparent, make it out of this: