Apple TV 4K behind-TV VESA mount bracket
A holder that hides an Apple TV 4K behind the television using a spare VESA screw. The 3rd gen Apple TV 4K is a 93 x 93 x 31 mm box weighing about 208 g, so the bracket is a 97 x 97 mm tray with 33 mm tall walls, 0.5 mm clearance, an open rear edge for the HDMI, Ethernet and power cables and a 20 mm circular cutout in the floor so the infrared receiver still gets a line of sight. A 20 mm tab with a 5 mm slotted hole sits under an M4, M6 or M8 VESA bolt. Walls are 2.5 mm and it prints flat with no supports.
A bracket cut to your Apple TV generation and VESA pattern holds better than a universal strap. In SpeakCAD you describe the box, preview the tray free in the browser, resize it for a Chromecast with Google TV, Roku Ultra or Nvidia Shield TV Pro in the chat, and download the STL.
Design a behind-TV tray for an Apple TV 4K 93 x 93 x 31 mm with 0.5 mm clearance, 33 mm tall walls 2.5 mm thick, an open rear edge for cables, a 20 mm infrared window in the floor and a 20 mm side tab with a 5 mm slotted hole for a VESA mounting bolt.