Fishing Rod: There are several different implementations that have existed. It doesn't have to be as good as the old fighting fish for an initial release, although fighting fish could be later added if you used the custom movement functions I implemented.
Castle Dungeon Quest for the L1 glove/gauntlet, which I created, and was literally live on the server 10 years ago.
Bowling. Graal already has all of the custom movement functions in inventory that I've written in the past. That would make it way easy to implement with some basic physics functions.
Fix the bug catching regression.