Leather, whether synthetic or real, isn’t a material we typically associate with the bathroom. But in the 1970s, it was a thing in Germany to clad bathroom scales with it. These olive and yellow models are by Krups:
This brown one, by competitor Stube:
Manufacturer Soehnle offered theirs in blue and orange:
These remarkably well-preserved specimens were in the collection of WertWerk, a South Korean vintage goods reseller. (All have been sold.)