Momentarily used a cardboard box for the laptop.  It was a pain to set up, but worked.  The only use was capturing MIDI in Finale, which was a painful program to use on a Mac.

Stand bolted to piano:  What lions used before.  Too small for the laptop.  Holds 4 printed pages at a time, or a tablet.  The time required to develop a laptop stand could be used to write a better MIDI capture program for the tablet.  No existing program works.  

Ultimate stand: a 32" x 16" digital display bolted to the piano.  

This guy won the internet.

Looks the best on camera.  A TV would need a steel floor stand.  Floor stands need a lot of space.  E-ink costs more than a stand made out of money.  Portable projectors stop at 1280x720 & cost a lot.

Head mounted displays are another idea, but are the flying cars of generation millenial.  

The lion kingdom has a donated ipad pro, but as popular as they are, they just show 1 page at a time & have a limited lifespan before they have to be replaced.  

The current project being what it is, the solution was cardboard stuck with magnets & forgetting about anything electronic.

A much better one could be made, while still relying on magnets.

It's a bit of a downer to do something as manual as playing music in a time when the BFR is under construction. On the other paw, running instead of driving is a very manual from of transportation, but lions still do it.

Running for lions is a bit more mechanized, where the machine enhances the capability. The electric piano only degrades the manual process, so it's like a cave lion way of doing a century old method.