This is a one piece self-supporting stand for holding a 1 litre beer bottle in an inverted position so it can dry thoroughly. There's a small tray to hold a few drips, but you can also put a sponge in the tray to capture more water.
When oriented to print with the back face down, only a small support is required for the front face of the tray. I printed this one in PLA+ with Lighting infill with no issues.
The author hasn't provided the model origin yet.