This is a holder for the amazon alexa 3rd generation, to hold it using the UK plug that comes with it.
There is space behind the alexa to hold the power cable

Supports are required, i used the tree supports which were easy to break off, there is plenty of space to get a screwdriver in to break off the support. It printed and works well with PLA.

There is also a spacer for the back, which supports the alexa if you wish to press the buttons, although it may need adjusted depending on the depth of your wall socket, some can vary slightly although it is a simple shape. Once printed i glued it to the main part.

There is a slight interference fit between the plug and the part that holds it, earlier revisions were slightly loose and i used a folded over post it note to tighten the clearance. The model now should have that corrected. 

There are holes around the sides to allow the sound to come out, so far i have not noticed any difference in audio quality.