This Tentacle System kit includes a base that sits on top of almost any display. It has a chain of links that hang down over the back of the monitor as a counterweight to the webcam. The chain ends in a cup that holds a AA (or LR6) battery.

The top has five different attachment points for displays of different thicknesses.

The top covers only the top 5mm of the display, usually less than the border width around the screen.

You don't need to use all of the links in the chain, or you can add more if needed.

You'll need to glue two parts together to finish the top piece. The smallest piece points in the opposite direction from the ball on top. It serves to hook onto the front edge of the monitor.

This kit serves as a base for any of the various Tentacle system components, so with this you can attach anything to the top of your display for which there is a suitable grip.

You can learn all about the Tentacle System here: https://3ddoodle.com/tentacle-system/