Not such a big deal and something rather subjective: Due to Covid, my university started to upload recordings of all of my courses. This has been a godsend for me, as I did not attend lectures previously and now have the chance to watch them only when needed.

Also, where before I often had to go to campus for 1.5hrs, which often meant sitting in train for equally long. Now, I can watch stuff from home and don't have to waste time travelling.