A lizard climbs onto Eleanor's head, but for one brief shot when the Tahani centaur walks in, it is no longer on her head. Then in the next shot, it's back on her head.
When Eleanor is looking at the reading list, she turns to the second page. When the shot changes to another angle she is still looking at the first page.
When Michael and Eleanor are talking in the garage, Eleanor's hair keeps changing - tucked behind her ears, not tucked behind her ears.
As Michael is arguing with Eleanor about humans having free will at the dinner, he mentions he had a 15-million-point plan designed to torture her, Chidi, Jason, and Tahani. However, when he was pitching his "The Good Place" idea to Shawn in S1:E13 (Michael's Gambit) it was a 14-million-point plan.