I wash my oscilloscope and watch cartoons on it (Soviet oscilloscope S1-68)
Lissajous figures on a Soviet "S1-68" oscilloscope. It has no beam on some limits (balancer?) and the CRT shines badly, but this grandfather can still do something...
Hardware:
Oscilloscope S1-68
Laptop Dell Latitude 5400
Soundcard Creative E-MU 0202
Musical snippets:
Yegor Letov — Aria of the Troubadour
Chris Allen (@ChrisAllenMusic) — Globetrotter, Dancer, Zodiac
Movie snippets:
DMB [Polygon, 2000]; Song-89 [Soviet Television, 1989]; Winnie-the-Pooh and the Day of Worry [Soyuzmultfilm, 1968]; SpongeBob SquarePants [Nickelodeon, 1999].