I started with a Tacx Tablet Holder running Zwift on an iPad, adapting a phone tray designed for a spin bike so I could have a smartphone handy running the Companion App:
…however, I’ve taken the tablet mount off temporarily since I’m using a TV for Zwift now. The tray still works fine without it.
Bunch of great ideas in this topic: Pain-cave photos/equipment ideas
If I were starting from scratch without a tablet mount, I might buy one of these: Trainer Tray — Foothill Products
EDIT - I bought the Trainer Tray.
