Hello everyone. Just made my account and skimmed over the rules/recent posts, to see if this has been thought of before, but I haven't seen it, yet.
Everyone has always seemed anxious to fly without using other people's mods, or cheating, etc, so I came up with the idea of a hot air balloon. I think it would fit perfectly in with the theme of minecraft, and would be made pretty reasonably.
Programing it, may be a bit hard to do, but here is how I imagine it to work....
9 Cloth Blocks = 1 sheet
9 Sheets = 1 "Balloon"
5 Wood, or maybe 5 Straw? (in a U shape, like a mine cart) = 1 Basket
You would put the Balloon in the top middle square. An Iron Ingot (or a furnace) below that, then the basket on the bottom. 6 Pieces of string (3 on each side) to hold it together.
Then you plop it down, hop inside, and insert a piece of coal into the furnace, which powers it for say... 4 minutes, like a powered mine cart.
It would float about 20 blocks above the block beneath it, and would simply move by wasd. Pressing your crouching button will lower it till it hits the ground, and "tethers" itself so it doesn't fly away. To release it, just right click on the furnace.
And that's pretty much it. Its not thought THAT much through, but I thought it would fit really well, and has a good recipe, simple, but effective.