The RasPad – a Raspberry Pi Tablet version – seems to be a wonderful alternative to my setup
https://www.raspberrypi.org/magpi/raspad-review/
https://blog.hackster.io/hands-on-the-sunfounder-raspad-raspberry-pi-tablet-f3256b9cebe0
https://hackernoon.com/raspad-review-turn-your-raspberry-pi-into-a-tablet-499579033214
https://www.sunfounder.com/ -> Webshop
Auf Deutsch
https://tutorials-raspberrypi.de/raspberry-pi-tablet-raspad-selber-bauen-testbericht/