Going through the scrap bin at Tap Plastic, I got a nice big piece of 1/4" mirrored acrylic for a buck.
I’d been toying with a design for the end “cheeks” of a synthesizer I own, but had intended to use wood. A few revisions (a lot of revisions) later, I now have some snazzy new bling! You can see the stock wooden end-pieces laying on the table.