Raspberry Pi In A Briefcase

This project spinned around in my head for several years. The last years I looked on flea markets for a suitcase or briefcase but what I found was either to large or to small or to expensive or not the style I dreamed of. But some weeks ago I found what I was looking for:

Into this briefcase I will mount a Raspberry Pi 3 Model B, a 10 inch LC display and a keyboard :

The first draft for the puzzle is like this (the remarks are in German). The laptop is accu driven. It holds as mentioned above :

a Raspberry Pi 3 Model B
a 10 inch LC display
a keyboard
an ethernet switch
an USB hub
a lipo accumulator
some analog instruments
a funnel emulating a steam driven machine
possibly a shack for the mouse
and much more electronic and mechanical gadgets

When I got the missing keyboard I tested the Raspberry Pi system with all it's components. I used a Raspbian image on a 32GB SD card with nothing changed but localized to German. Without having a DC/DC converter at hand I used two power supplies with 12 V for the display and 5 V for the Raspberry Pi.

Next I drafted the mechanics for the retractable funnel.
There is the funnel itself, formed from a brass tube with a diameter around 20 mm. It should be retracted with a lever mechanic or by a directly attached R/C modelling servo. The lids will open upwards. They are handled by a lever attached to a R/C modelling servo. Some thoughts I have to invest in how to get a clean surface when the lids are closed and when the funnel is lifted to it's end position.

I got a current meter and a voltage meter in the same round shape. They are more vintage looking than the rectangular ones I found in my spare parts box. The left one will show the accumulator voltage, the right one will show the current consumption of the whole electroncs.