This is going to be my first suggestion that is not RP or QoL oriented.
Add more items to the very rare table that allow players to play with different things to do with the natural world.
Orb of Tchernabog: When used, it causes a solar eclipse (or massive black clouds) that turns day to night for 1h (1h In-Game. 20m IRL), before returning to normal. Surely the portent of something bad happening.
Seeing these with the same rarity (or rarer) than scrying mirror could be fun. There are already 'bottled storms' which I think are great for sailing.