If you want to have many Ups, you have to be a Tanuki Mario, and go to world 2-4. At the place, where are endless Goombas in a box, you have to wait, until two Goombas came out of the box and then, you have to jump on the first one, and stay in the air as long as another Goomba came out of the box and jump on him.
If you have got Ink on your screen you just have to blow in your micro.
In the worlds 1-3 you can see an UFO while looking into the telescope into the sky.
1.Portable coin-block:
He first appears in 8-1, and works like the Propeller-block, but you get a coin after a few steps.
2. The Stone-Tanuki-Leaf:
It works like the Tanuki-Leaf, but if you do a stamping attack, you will fossilize.
At the end of the level 1-2, where the normal tube will take you to the flag, you have to go into the space and move to the right side till you can see an orange tube. It will take you to World-2.
Do you know the waterfalls in the waterlevels? Sometimes you can go through them and you can find an item.