I designed a simple text sign for my room to show my roomates whats going on... :D
Using ws2812 leds and nodemcu to control via nodered.

As a diffuser I used standard 11mm glue sticks (such as https://www.ebay.de/itm/143107549310) and some thin paper.

My first "thing" uploaded to thingiverse. Created with Tinkercad.