There was this project idea that some researchers at Langley developed in the mid-2010s called HAVOC (High Altitude Venus Operational Concept) [0] for a 5-stage mission to send humans to Venus's habitable-ish cloud layers. It never really got anywhere, but there was apparently some media attention around it for some time.

Because the nitrox atmosphere we're used to is a lifting gas in the Venusian atmosphere, you could theoretically just fill a big balloon with our atmosphere and live inside it, with lots of Teflon on the outside and suits made of Teflon to work outside the habitat. I also (kind of?) remember reading about using metal nets to capture and condense H2SO4 from the clouds and process it into water, oxygen, and hydrolox rocket fuel.

[0] https://ntrs.nasa.gov/api/citations/20160006329/downloads/20...