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I should have set this up years ago. But it's no tale of woe.
Whether the temperature is high or low, regardless of cold winds blow,
away we go like Edgar Allan Poe, on now with the show. BTW rhymes are welcome.
Not that hard. Just build four 1 by X towers (X = height you want) on a 3x3 grid.
X0X 0G0 X0X
X=Material you want to use 0=Nothing G = Glass
Once you get the height you want, put the glass 1 block below the top in the middle of it all. Then use a bucket of water and put the water on top of the glass. Then put torches on the sides of the glass.
I made tunnels under sand with water. And I have made numerous fountains. As well as a few cobble and obsidian generators. And as far as your challenges, GAME ON!