3x5mm Prototype Circuit Board Case w/ Lid

thingiverse

These boxes are perfect for mounting tiny 3x5mm circuit boards. A ton of these small, affordable boards are available, making them a great option. The lids can be used to complete the enclosure, providing a secure fit for the cards inside. To ensure proper printing, simply flip the lid upside down in Cura before printing - this will allow for a wider surface area on the bottom.