Adapter from a europlug (CEE 7/16 2.5 A/250 V) to a cylindrical plug with and without grounding.
Increases the reliability of the connection, reduces the likelihood of the plug falling out of the socket, reduces the mobility of the connection.
It has a conical shape of both a cylinder and a recess for a socket.
I recommend using double-sided adhesive tape to fasten the adapter and plug.
The author marked this model as their own original creation.