Area Patches are items in Kirby's Epic Yarn. They are found and obtained by completing a level. They will only work on the particular world they were found in. For example, if an Area Patch was found in Grass Land, then it will only work in Grass Land. Anyway, the purpose of Area Patches is that they will cause something to happen on the map, usually unlocking the next level in the process. It is to note that there are no Area Patches for the first level of each world, for they are unlocked as soon as the world is unlocked.
The alarm clock appears underground right next to a sleeping bear. It then sets off, ringing its alarm. This causes the bear to slowly wake up. As the bear gets up, he stretches and yawns, which causes the land above him to rise. This opens the path to this level. The bear then goes back to sleep.
A torch lights itself on a set of logs, causing a fire which cooks the chunk of meat above. A large, sauropod-like dinosaur appears from the cave and notices of the chunk of meat. It then bites it and eats it whole, leaving the bone. This unlocks this level.
The volcano in the center of the map is exposed to hot pepper, which causes it to erupt violently. Lava fills the symbol in the background and causes clouds to appear, opening the way to Hot Wings' battle.
A square-like shape appears over a transparent pyramid in the background. It then switches itself to form an hourglass, which fills itself up from the bottom. It then turns upside down, causing the sand to fill up the pyramid. This opens the way to this level.
A red and white striped hoop appears above the sea. A dolphin, orca and blue whale jump through the hoop in that order. However, the whale gets stuck in the hoop. So, with that being said, he decides to stay at the surface of the hoop and spout water from his blowhole. This allows access to this level.
A huge spool appears next to the snowman and takes some yarn from its body. The spool then stitches the nearby mountain, making Mt. Slide. After that, Kirby and Prince Fluff can go to the mountain and access this level.
A huge snowflake appears and takes even more yarn from the giant snowman's body. The snowflake will spin around, making a giant snowflake wheel. Once its done, the wheel will slow down. Kirby and Prince Fluff can now access this level.
Diamond Dust appears, along with a strong wind. The wind will blow the remaining yarn from the snowman and create an aurora with it, leaving a small snowman dressed in a crown and cloak. When the aurora is finished, a door will open, allowing Kirby to battle King Dedede.
The bells appear in the center of the map and begin to ring. This causes an angered Yin-Yarn to appear and trash them. He then darkens the level, surrounds his door with an energy aura, and passes through. Kirby and Prince Fluff can now enter the door to battle him.