I went mining for diamonds, and in the shortest most successful mining trip ever (I kid you not, I had not even started stripmining when I found 4 diamonds) got a load of goodies. Then, I followed a buried treasure map to some treasure that had somehow been found already, but still got stuff from a shipwreck and had to disconnect glitch my way away from a drowned with trident. Then, I mined exposed water ravine ores - my 3rd favourite reasons to why ocean seeds are great - and then made a lot of spyglasses. Finally, I made a diamond pickaxe, collected obsidian and deposited all my loot at my base :D