A simple single-layer case with a black fan and aluminium heat sinks.
Part List 2 x Brown Acrylic Layer (Case) 1 x Black Quiet Fan 4 x Screw and nut for Fan 4 x Aluminium heat sinks(silver) for RPI 4B 3 x Aluminium heat sinks(silver) for RPI 3B+ 4 x Long copper stick (for fixing case frame) 4 x Short copper stick (for fixing RPi) 4 x 304 Steel screw 4 x M2.5 Screw 4 x Washer 4 x M2.