It’s very easy to do, for this we need:
Keyboard, a small piece of org. glass, as well as Light-emitting diode, any color (I took blue)
Let's get started - first, let's unwind the keyboard and separate the required number of buttons that we need for the stand, the legs of the buttons also need to be separated, after that we will deal with the organization. glass.
![Keyboard piece of plexiglass](https://i.washerhouse.com/images/1/1417-klaviatura-kusok-orgstekla.jpg)
![Lay out the keys](https://i.washerhouse.com/images/1/1424-vykladyvaem-klavishi.jpg)
Let's cut off a piece of the required length, the shape can be absolutely arbitrary, then we'll start gluing the buttons to the org. glass, ordinary glue holds them perfectly,
![glue it into the hole](https://i.washerhouse.com/images/1/1419-vkleim-ego-v-otverstie.jpg)
after you have glued the buttons, we will drill a small hole in the corner of our stand, into which we will subsequently glue Light-emitting diode, now let’s deal with the backlight itself, using the remaining USB cord from the keyboard, measure the output voltage using a voltmeter, based on this we will choose Light-emitting diode, suitable for voltage, when everything is prepared, solder Light-emitting diode to USB
![solder the LED](https://i.washerhouse.com/images/1/1418-pripayaem-svetodiod.jpg)
and glue it into the hole that we drilled in the corner of the stand, that’s all, we wait until the glue dries.
plug it into any USB input and enjoy the results of the work.
![plug into any USB input](https://i.washerhouse.com/images/1/1420-vklyuchaem-v-lyuboy-USB-vhod.jpg)
![cup holder of their keyboard](https://i.washerhouse.com/images/1/1421-podstakannik-ih-klaviatury.jpg)
![creative cup holder](https://i.washerhouse.com/images/1/1422-kreativnyy-podstakannik.jpg)
![cup holder at work](https://i.washerhouse.com/images/1/1423-podstakannik-v-rabote.jpg)
![DIY cup holder](https://i.washerhouse.com/images/1/1425-podstakannik-svoimi-rukami.jpg)
Assembly video: