First of all thanks for all of your praises! I got the panels made by a company in Berlin, Germany. The company is called Schaeffer Aparatebau and has free software, which you can download to design the panels. After designing them you can send them the files and they will machine them for you (they also ship internationally). The total cost of the panels was around EUR 300, which looks really expensive on first sight, however is very reasonable for the amazing work they did for me. @y_N_e_M_a I am not going to put switches in the holes, however touch sensors. I made a circuit with all of the touch electronics (see earlier posts). I will attach the small aluminum electrodes, which are on the same photo into the holes and simply solder a wire to the back of them connecting them to the electronics.