Here is a case I designed to hold the Launch Pad v2 PCB with a strip of WS2812B addressable LEDs. I was looking to design a simple case that I could print without supports in transparent PETG.

Parts

Launch Pad v2 PCB

https://spacecat.design/collections/pcbs-cases-kits/products/launch-pad

BTF-LIGHTING WS2812B RGB 5050SMD Individual Addressable 3.3FT 100(2x50)Pixels/m

https://www.amazon.com/gp/product/B07BTTY4FL?ie=UTF8&psc=1&linkCode=sl1&tag=neubeck-20&linkId=5c1adcf1e26e86d2a2323754efe7a0b7&language=en_US&ref_=as_li_ss_tl

Cherry MX Blue Key switches

https://www.amazon.com/gp/product/B07BTTY4FL?ie=UTF8&psc=1&linkCode=sl1&tag=neubeck-20&linkId=5c1adcf1e26e86d2a2323754efe7a0b7&language=en_US&ref_=as_li_ss_tl

HiLetgo 3pcs Pro Micro Atmega32U4 5V

https://www.amazon.com/gp/product/B07BTTY4FL?ie=UTF8&psc=1&linkCode=sl1&tag=neubeck-20&linkId=5c1adcf1e26e86d2a2323754efe7a0b7&language=en_US&ref_=as_li_ss_tl

BOJACK 1N4148 Switching Diode

https://www.amazon.com/gp/product/B07BTTY4FL?ie=UTF8&psc=1&linkCode=sl1&tag=neubeck-20&linkId=5c1adcf1e26e86d2a2323754efe7a0b7&language=en_US&ref_=as_li_ss_tl

Filament

OVERTURE 3D Filament Clear PETG Filament https://www.amazon.com/gp/product/B07BTTY4FL?ie=UTF8&psc=1&linkCode=sl1&tag=neubeck-20&linkId=5c1adcf1e26e86d2a2323754efe7a0b7&language=en_US&ref_=as_li_ss_tl