Completely rewrite the curriculum and problem sets for my advisor’s grad-level course for flipped-classroom virtual teaching as opposed to in-person lectures. It was the pits for many reasons, not the least of which was that his attitude became “everyone is at home doing nothing, so I can ramble into a recording for 3 h instead of giving 1 h lectures and we can have a full problem set every week instead of 4 in a semester and the scheduled class time is now a problem session amd to answer students’ questions :)”.

And a fuckton of DFT calculations, so honestly, fair.