Often I'm just looking for some vaguely novel line in an opening that might be interesting to pursue in a game (I am not a strong player but love studying). I sometimes like seeing the difference in analysis between Stockish and Leela of real games (Magnus Carlsen attributes much of his recent form to trying to play more like AlphaZero with all sorts of positional pawn sacrifices etc). I've also tried to do some programmatic stuff around the analyses to automate things (i.e. find a move in a common line that nobody in my database has ever played but the computer says is best, or find lines where it looks like the opponent only has a single path through to stay in the game etc).