39C3 RGB Catear Bill Of Materials

C3CAT with a cat ear headband around the 'A'
WS2812B LED Strip
5mm wide, 160 LEDs/m
JST SM 3 Connectors
10 Pairs
Transparent Heat Shrink
8mm
Black Heat Shrink
5mm
Black Heat Shrink
3mm
ESP32 Controller
ESP32-C3 SuperMini
Cable (1,2m needed)
30AWG, 3 Cores
3D printed case
See below

Parameters needed for the case:

use_boot_button
true
use_custom_button
false
use_lip_lock
true
use_screw_lock
false
use_click_lock
true
use_slide_lock
false
add_12v_barrel_slot
false

You might have to play around with tolerances, they have to be tuned to each filament and 3D-printer combination.
Tuning top_cover_lip_tolerance might be all you need.

Thanks @traumweh@chaos.social and @kritzl@chaos.social for the awesome case!