I wrote on plexiglass the mojito recipe and then I create a small led circuit that I insered in a frame around plexiglass.
For the mojito recipe I designed it on Photoshop and then I reverted the image in order to write it on the good position on the plexiglass.
It is pretty cheap DIY and it is a low comsuption energy system because you can use 2x 1,5v battery or 3x 1,2v battery.
Step 1: Print your model
Print your reverse image and then stick if on plexiglass.
To engrave it I used a dremel with a small peak.
The plexiglass is a 0,5mm thick.