Yomawari: Night Alone • Collection Item Locations

Timestamps for mobile users in pinned comment below!

#01 | Flashlight (00:16)
#02 | Sis's Shoe (00:34)
#03 | Torn Collar (00:47)
#04 | Red Charm (01:15)
#05 | Eyepatch (01:34)
#06 | One-Eyed Daruma (01:49)
#07 | Mary Doll (02:38)
#08 | Japanese Doll (06:43)
#09 | Big Bell (07:01)
#10 | Doodle Note (09:14)
#11 | Dull Eyeball (09:24)
#12 | Meat (09:41)
#13 | Dry Tissue (10:35)
#14 | Bone-Shaped Gum (10:45)
#15 | Blackboard Eraser (11:11)
#16 | Origami Crane (11:22)
#17 | Hard Candy (11:39)
#18 | Unhappy Letter (12:15)
#19 | Secret Letter (12:29)
#20 | Secret Path Note (13:30)
#21 | Chicken Egg (14:04)
#22 | Clacker (18:31)
#23 | Torn Swimsuit (18:46)
#24 | Knapsack (19:01)
#25 | Box Robot (19:13)
#26 | Abusive Note (19:26)
#27 | Red Exam Sheet (19:40)
#28 | Recorder (20:01)
#29 | Slippers (20:12)
#30 | Red Crayon Note (20:24)
#31 | Mummy (20:54)
#32 | Unique Bottle (21:12)
#33 | Cigarette Butt (21:24)
#34 | Black Note (21:41)
#35 | Wet Hourglass (21:59)
#36 | Moldy Bread (22:15)
#37 | Torn Rope (22:32)
#38 | Torn Shirt (22:48)
#39 | Fingernail (23:05)
#40 | Moldy Note (23:23)
#41 | Human Bone (23:44)
#42 | Trophy (24:28)
#43 | Dead Bug (25:10)
#44 | Warped Marble (25:25)
#45 | Broken Pencil (25:48)
#46 | Old Newspaper (26:08)
#47 | Blue Crayon Note (26:22)
#48 | Jagged 10 (26:49)
#49 | Paper Plane (27:22)
#50 | Plastic Camera (27:52)
#51 | Pair of Shoes (28:09)
#52 | Big Fang (28:27)
#53 | Red Trinket (28:56)
#54 | Cup Ramen (29:16)
#55 | Black Furball (29:42)
#56 | Yellow Crayon Note (30:20)
#57 | Picture Book (30:44)
#58 | Kid's Sandal (31:19)
#59 | Diary with Lock (32:07)
#60 | Ring of Beads (32:31)
#61 | Piece of Cloth (32:50)
#62 | Metal Pipe (33:22)
#63 | Factory Newspaper (34:02)
#64 | Torn Crayon Note (34:50)
#65 | Black Crayon Note (35:51)
#66 | Tsuchinoko (36:19)
#67 | Worn-Out Crayons (36:51)
#68 | Toy Bone (37:01)
#69 | Dry Eyeball (37:16)
#70 | Radio (37:31)
#71 | Weird Puzzle (38:28)
#72 | Part 1 (39:04)
#73 | Part 2 (39:18)
#74 | Part 3 (39:33)
#75 | Part 4 (39:49)
#76 | Part 5 (40:29)
#77 | Puzzle Piece 1 (40:55)
#78 | Puzzle Piece 2 (41:13)
#79 | Puzzle Piece 3 (43:16)
#80 | Puzzle Piece 4 (43:31)
#81 | Puzzle Piece 5 (43:59)
#82 | Puzzle Piece 6 (44:20)
#83 | Puzzle Piece 7 (44:45)
#84 | Puzzle Piece 8 (45:12)
#85 | Puzzle Piece 9 (45:26)
#86 | Puzzle Piece 10 (45:49)
#87 | Puzzle Piece 11 (46:05)
#88 | Puzzle Piece 12 (46:29)
#89 | Puzzle Piece 13 (46:48)
#90 | Puzzle Piece 14 (47:37)
#91 | Puzzle Piece 15 (48:13)
#92 | Puzzle Piece 16 (48:44)
#93 | Puzzle Piece 17 (50:02)
#94 | Puzzle Piece 18 (50:22)
#95 | Puzzle Piece 19 (51:06)
#96 | Puzzle Piece 20 (51:46)
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Also, about the items in the Cliff area, I recommend collecting them after Chapter 3 is over, since the girl won't be chasing you.

When all Collection Items are collected, nothing will happen in-game. If you play the PS Vita version or the PC (Steam) version, you will earn the Collector Trophy/Achievement.