Base for 70x30 mm perfboard with Lolin D1 Mini. USB-C charger port in the other end and small hole for cable in the other.

Cover fits on top of base snugly, there is just 0.1 mm clearance.

Perfboard can be screw-mounted to base part from corners. 0.3 mm clearance to bottom so you can run your wires also under the board.