Adapters for various versions of BME280 boards:

• dfrobot: https://www.dfrobot.com/product-1606.html
• two kinds that are widely available on aliexpress

You can use them to mount the sensor board on the inside of a case and expose to the outside only the sensor itself.

Designed in OpenSCAD as a part of the Smogbusters project - https://github.com/dshop-gliwice/smogbusters/tree/master/parts. Source files included