Biting Plant Flower Near the begining of the game, at the Village of all beginings. You will find a row of the pumpkin-like plants with a Kokka bird, a Koma pig and a blue apple resting on top of them. Kill the bird and pig and then knock the apple off the right and edge by either throwing an enemy at it or hitting it with your Black Jack weapon. The apple should fall into the mouth of a biting plant below which should bloom into a flower. This may be repeatable in other areas, but I haven't found one where an apple is situated perfectly over a biting plant.
Change Tomba's Hair Color At the options screen hold R1+L1+Select+Square and press Left, Down, Up, Up, Right, Down, Left.
Iron Boomerang In Phoenix Mountain, around the area where the "What's a Funga?" event is found, there are wooden bars. You need to reach the top bar. Before heading out, though, you need the following to be equipped:
Flash Pants/Psychic Fish Now swing Northeast on the highest bar. If you have difficulty, use the Grapplejack to cling to a bar. You should be at either a bunch of egg plants, or a chest. At the plants, just gently drop down, open the chest for the awesome power of the Iron Boomerang. It can be thrown 3 times in a row. I recommend sticking to your Grapplejack, though.
Leaf Butterflies If you've restored the Forest Of All Beginnings and still need those butterflies, just slide down on the hill before the area of the baked yam. 25 Leaf Butterflies will come out. Collect them then head to the Deep Jungle for the other 4. Once you have all 29 you'll get a Golden Butterfly, one of the 5 rare golden items. Lumberjack Factory Quirk Tomba must have the grapplejack to do this. Go to the Lumberjack Factory in the Village of Civilization. Climb up onto the platform with the two people. Stand next to the one with the brown hair and jump into the air, throwing your grapple to the left. The grapplejack should catch in midair right over the house and Tomba will be hanging almost sideways. Then let go of the grapplejack and push to the right as Tomba falls. Tomba then will fall into the cage with the purple monster. If you press to the right Tomba continues to walk off the edge of the platform and into midair! You can jump back to where you started from with no problem.
Mean Wise Man In the Village of All Beginings, don't open any Kokka eggs. Instead, go directly to the 100 Year Old Wise Man. He will order you to get the other chicks and throw you out the window!
Recover Health If you are low on health in the game, go to a sign post and save your game. Now hit START and choose LOAD. Load the game you just saved and you'll be back to full health! You can also recover health by talking to the 100 Year Old Wise Man.
The 8th Evil Pig After you defeat all seven evil pigs, go to the strange small room in the underground mines, they will tell you that you need to find seven friends to stand on the platforms. Do this and battle the 8th evil pig!
The Green Pig To get to the green pig, first you must go to Mushroom Forest and obtain laughing status. Then go to the haunted mansion near Baskar Village. Go on the slide with two pig snouts, and travel to the SMILE! door. Look up and laugh. The door will open and (if you have the green pig bag) there will be the green pig gate. Jump into it. When fighting the pig, jump on him and throw him into the Pig Bag when it's turned your way. Congrats, now you can travel through the Lava Caves.
The Orange Pig To get to this pig, you need to ride the Phoenix to the jungle, keep going to you get to the first cage. Now keep going left till you get to a tree you can climb on. Go up to the top, and jump to into the evil pig gate (providing you have the orange pig bag.) Kill him by throwing him into the bag as it turns your way.
The Yellow Pig This one's easy, but you'll need the grappel and you must defeat the green pig first or you will not be able to pass the fire.
Yan and the Golden Bowl To find Yan you first find him in the first house of the forest of all beginnings (he's the dark guy looking at the window), but you won't know who he is until you go to the Hidden Village (in the lava caves, you need the grapple, top left corner) and talk to his dad and he'll give you Yan's lunchbox. Go back to Yan and he'll leave. He will then be at the Charity Square where the Leaf Butterflies were, then at the Funga Jungle in the background on the top of the wood structure, then at the Stormy Mountain in the smiling door (need to be in laughing status), then in the haunted house where the singing pirate is (past the straws, need the Fire Jewel), and finally at the north of his village. After you get him the last time he will give you the Golden Bowl, which gives you double power.