This is a multi-way connector for the Tentacle System.
You can use this lots of different ways.
The Tentacle System allows you to create ad hoc stands and holders using a variety of connectors and holders. So, all of the other Tentacle System parts can be use with this to create unique stands and holders.
It prints in three pieces, with supports. The pieces can be oriented however you wish, except that the ball and cup are always at 90º to each other. The pair can be oriented however you like. You will probably need to superglue them together to secure them.
You can learn all about the Tentacle System here: https://3ddoodle.com/tentacle-system/
The author marked this model as their own original creation.