using these filters: https://www.amazon.de/Cherry-Tea-Taotronics-Luftreiniger-Schlafzimmer/dp/B08Z2KWJF9/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=1YUL5CBA5RM51
and an 80mm fan.
10mm M3 screws for mounting the fan.
Feel free to add a ''Make'' If you decide to print this and push the like button if you like my design!
EDIT 6.1.2022: Added a wall mount
The author hasn't provided the model origin yet.