The cousin info has been taken from slo_bro's faq over at game faq's with his permission. I did not write this, I'm merely expanding the reach of this info. Enjoy.
These are the classic items within the game, they're no different from other items. The only thing they do is up your points score. They are worth more than regular items. Getting these will help you get 100 point total.
SHIMANO HOUSE - indoor area with the Shimano kids and with Ace
Turtle Stage Eternal, Turtle Stage, Royal Monument Stage
Sweet - Sweetheart Chocolate - under a bed, you have to go through a hole
Cute - Lovely Mascot - raccoon guarded by a Teddy Bear
JOUSHIMA VILLA - indoor area with two guys sitting around & with a masked cat
Turtle Stage Eternal, Panda Stage, Elephant Stage
Soft - Soft Marshmallow - carried by one of the circling angels
Hard - 10 Carat Diamond - held by an angel reached by going through a hole
MODEL SHOP - indoor area with a guy polishing a fish statue and with Havana
Turtle Stage Eternal, Octopus Stage, Polar Bear Stage
Funny - Funny Bug (Takeshi) - on the floor in the room with the aquarium.
Red - Disinfectant - under a desk near coins.
MAPLE TOWN - snowy, day into evening
Canary Stage Eternal, Cat Stage
Lucky - a New Year’s Gift (New Year’s Envelope) - in a wall of bricks, before 75cm barrier
Cheeky - Slingshot - a kid is holding it next to the restaurant, before 75cm barrier
Hot - Ozoni Soup - at the top of the hill, beyond 75cm barrier
Freezing - Icicle - hanging from the gate at the top of a stairway, beyond 75cm barrier
OAK TOWN - day into evening
Canary Stage Eternal, Cheetah Stage, Whale Stage
Healthy - Radish Salad - on the street among fruits, before 75cm barrier
Useful - FIrst-Aid Kit - In front of the fenced building with two parked cars. Climb the shelves with plants, up onto the things with wheels. Before 75cm barrier.
Happy - Konosuke Kubo - running laps around a building, beyond 75cm barrier
Nerdy - Eiichi Nonoshita - on top of an elephant, beyond 75cm barrier
SAKURA TOWN - evening into night, lots of drunks staggering about
Canary Stage Eternal, Canary Stage
Bright - LED Light - area that looks like the entrance to a supermarket, before 75cm barrier
Amusing - Jack-In-A-Box - bump a tree by a drunk above the pool, before 75cm barrier
Shady - Thief’s Sack - on a mat under a tree, beyond 75cm barrier
Yummy - Sashimi Boat - next to guy chasing girl with flowers, beyond 75cm barrier
STRAWBERRY CITY - day into evening, with a golf course
Gold Bug Stage Eternal, Gold Bug Stage
Exotic - Fukuko Shinozaki - in the office building, before 4m barrier
Glam - Miki Watarai - in the office building, before 4m barrier
Loud - Devil Kataoka - in the area near the train tracks, beyond 4m barrier
Sophisticated - Mr. & Mrs. Maeda - on top of a small hill, beyond 4m barrier
MELON CITY - snowy, day into evening, with racetrack
Gold Bug Stage Eternal, Dolphin Stage
Dedicated - Michinobu Bonda - in the wedding party, before 4m barrier
Smart - Professor Takanashi (Ryohei) - in the wedding party, before 4m barrier
Buff - Macho Sculpture - between the soccer goals, beyond 4m barrier
Kewl - V-Red Bike - racing around the racetrack, beyond 4m barrier
BANANA CITY - evening into night, with zoo
Gold Bug Stage Eternal, Crab Stage
Disturbing - Mr. Bones - in the mall/haunted house, before 4m barrier
Fortean - Dorothy the Witch - flying low over the water, before 4m barrier
Wild - Carlos - on top of the tallest hill where the trees are, beyond 4m barrier
Popular - Stephanie - she‘s an orca in the water near where Carlos is, beyond 4m barrier
RADISH LAND - evening into night
Cicada Stage Eternal, Beetle Stage Eternal, Cicada Stage
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Hot Rod - Drag Racer - circling with other race cars at the top of the hill, before 30m barrier
Nostalgic - Festival Float (Portable Shrine) - in the lowest part of town, before 30m barrier
Historic - Spiral Rock - out in the water, beyond 30m barrier
POTATO LAND - day into evening, with donut-Rookie Ban-Ban
Cicada Stage Eternal, Beetle Stage Eternal, Beetle Stage
Convenient - Hired Car Service (Limousine) - in the lowest part of town, before 30m barrier
Innovative - Solar Panel - below the lowest ferris wheel, before 30m barrier
High-Powered - Super Submarine - at the edge of the water, beyond 30m barrier
Heavy Metal - Super Tank - next to the runway, beyond 30m barrier
ZUCCHINI LAND - snowy, night into day, you start in the water
Cicada Stage Eternal, Beetle Stage Eternal, Peacock Stage
Pretty - Christmas Wreath - on top of a lighthouse by the sea, before 30m barrier
Precise - Fine Timepieces Co. (Classy Watch Store) - in lowest part of town, before 30m barrier
Aesthetic - Pipe Organ - next to coliseum and Eiffel Tower, beyond 30m barrier
Dreamy - Ice Santa - in the coliseum, beyond 30m barrier
RICE STATE - day
Peacock Stage Eternal second area when you start in RADISH LAND
Brave - V-Robo - floating by the edge of the stage
High-Capacity - Freight Ship - in the sea
CORN STATE - evening
Peacock Stage Eternal second area when you start in POTATO LAND
Gigantic - King Lopez - in a corner, right under Odeko
WHEAT STATE - night (snowy)
Peacock Stage Eternal second area when you start in ZUCCHINI LAND
Hefty - Queen Natasha - a penguin, very, very hard to miss
SUNFLOWER CONTINENT - the big time
Royal Monument Stage last area
Exquisite - The Queen - pickup at 2970m
Great - The King Of All Cosmos - pickup at 3430m
Omniscient - The King’s Father - pickup at 4040m