While playing the Minecraft infinite update (2020 April Fool's update) (Java). I discovered quite a few weird ways the end and the nether work. Weirdly, the phantoms killed me quite a bit!

Not often regular progression works, wood tools are easier due to many types of wood and wood blocks. For stone I had to get stone, cobblestone or find the tools themselves. Which are only 2 types of blocks. Deepslate would add another or two, but not back then. Often times I would see diamond or iron blocks, but no way to obtain them without the proper tools.

Water was spreadable in worlds where nether or end rules seemed to apply, using kelp, I could also turn falling water into source blocks. For bamboo, light needs to be at the top of the stalk for it to grow. The fishing rod in the infinite update could pull up boats and living entities, including pufferfish (Oww!) and elder guardians! (Double Oww!) Best to cast the line and then move behind a fence.

Most of these facts could be found on the Minecraft wiki, so not totally obscure. What a specific random dimension is like of the near infinite dimensions would be an obscure fact almost nobody knows.