Simple soldering fume extractor utilizing a 92mm case fan and parts I stole from an external hard drive reader.

Parts:
12V PC fan | 92mm x 92mm x 25mm
Small rocker switch | ~9mm x 13.5mm
12V barrel jack | ~9mm x 11mm
12V power supply
6x M4x15 screws
6x M4 washers
Carbon filter material
Weight (optional)
Rubber feet (optional)

Printing Details:
Printed in Inland Black High Speed PLA+
2mm layer height could definitely be increased
Print Base.stl on its side for optimal supports/orientation
Paint Organic supports (overhang only) onto larger overhangs
Turn off auto-generated supports
Set Infill Bridging Angle to 45

Assembly:
Using 4 of the screws & nuts , attach the fan grill to the intake side of the fan. Using the remaining 2 screws & nuts, attach the fan + grill assembly to the base, making sure to run the wires through the hole in the base. Mount the switch and barrel jack and wire everything together. The holes for the switch and jack are meant to pressure fit the components. Use hot glue to lock them in place if you desire. The depression in the bottom is meant to hold a weight. I used hot glue to hold mine in place. Once wiring is complete and tested, attach the bottom to the base either with more hot glue or by just “welding” the bottom directly to the base with a soldering iron to fuse the two pieces together. Insert your carbon filter. Attach rubber feet if you want, and you're done. I put a strip of electrical tape on either side of the fan to close the gap between the fan and base as well.