In my case mostly radioactive bars, and starfruit wine.
Spending an entire day with luck boosting food and drink, 2 combined rings that each have full magnetism (so usually two iridium bands with either a magnet or glowstone ring), and a slingshot of explosive ammo. Just resetting floor 1 over and over again until you see ore you can shoot, shoot it, click the ladder so time is paused while the rings attract the ore, back up, repeat. I can get over 200 ore a day like that on a high luck day. Average of 2.3 ore per node, about 1.3 shots per node, craft explosive ammo from deconstructed spinners bought from Willy (deconstructers at the top of the ladder with a chest with the tackle next to it). That’s 40 bars, at 4,500 each with blacksmith, 4,359 when you account for the tackle (4,077 if you buy the coal), so 174k. My record is 265 ore, so 231k for the day.
Greenhouse full of starfruit and turn it into wine, 215k for every harvest, every 13 days with no fertilizer, 9 days with deluxe speed-gro (only 80g from the Oasis, negligible cost after enough harvests), for an average of 16.5k/23.9k per day.
Pre 1.5 I would do skull cavern dives with bombs and staircases for prismatic shards and iridium which I would make into bars.
I haven’t ever made it year 3 spring 1, but I have managed it in the spring of year 3.
Awww, sweet baby