Treasures, Fruits, and Parts

Parts are the first thing this will cover. Parts are found in different worlds and biomes of pikmin 1 to be found by olimar and the pikmin. You need at least 25 parts by the end of day thirty, if not then olimar will become olimin (or pikmar) Treasures are the next thing this will cover.
Treasures are found throughout pikmin 2, and the treasure guage is very useful for finding them. (also white pikmin) finding enough treasures to pay off 10000 pokos is the games main goal, but bosses usually drop treasures worth treasures that also give you a new gadget or ability to play around with.
Fruits are essential in pikmin 3. They give you more days to play the game, and if you run out of them you are doomed. Grabbing fruits that usually require you to solve puzzles is sometimes easier if you just grab a batch of winged pikmin and make them charge at the fruit to grab it, and fly back down with it skipping the entire puzzle.