Making containers just got easier for POV-Ray users, thanks to a great utility called Epspline!
Epspline builds easily on most Unix/Linux variants. In addition to some sort of Build Essential environment, the wxWidgets library is also required. It didn’t take much to get going, as the documentation is in pretty good shape. In about a half hour I was able to produce the two shapes (under dish and flowerpot) you see in the example below: