Print all with 4 walls and top/bottom shells with 4 layers.
I recommend to use archimedean pattern for top and bottom layers.
Bottom side need supports for usb-c hole.
USB-C connector https://sl.aliexpress.ru/p?key=1DRYG0R
LED strip 5mm 5v 2Pin Wire https://sl.aliexpress.ru/p?key=bFRYGEx
You can use just two segments (20mm). On photo 4 segment (40mm)

Cost:
24 grams of PLA
$0,23 USB-C
$0,05 two segment LED strip