1) Motorcycles kick ass. Have fun.
2) I still like this one but do the following to "fun" it up
a) change the bricks right below the pipe to the blue stone
b) do the base in grey stone and lava
c) do the area above the pipes but below the "ground level" CP as an underwater stage.
3) Disregard all of that, get a piece of gianourmous PVC, do it up to look like a pipe coming out of a brick ground, and put a cocktail machine inside it like barrel of kong
4) Profit.