A really simple 3d printable soldering fume extractor that works suprisingly well.
It can be powered using a 3s lipo battery using a jst bettery connector. Or using a 5.5mm dc jack. You could also only install one of the options. There is also room for an on/off switch. The fan this is designed around is a 5010 fan. I used a 12 volt fan but that can of course be changed.
Hardware links (had all parts but found some that would work)(Switch and one of the power inputs can be skipped):
Can't find a link right now for the switch I used but still included the 19mm x12mm version
DC jack: https://www.amazon.com/DAYKIT-Female-2-1x5-5MM-Adapter-Connector/dp/B01J1WZENK/ref=sr_1_3?dchild=1&keywords=5.5mm+terminal&qid=1627674352&sr=8-3
JST connector: https://www.amazon.com/Pairs-Connector-Battery-Discharge-Female/dp/B01JUDP5NY/ref=sr_1_12?dchild=1&keywords=jst+connector&qid=1627673831&sr=8-12
Two m3x8mm button head bolts
Also the .step file is available for any modifications you might want to do.