monsters and a kid disney movie based on some book?

Upon moving into the run-down Spiderwick Estate with their mother, twin brothers Jared and Simon Grace, along with their sister Mallory, find themselves pulled into an alternate world full of faeries and other creatures.

Lovable Sulley and his wisecracking sidekick Mike Wazowski are the top scare team at Monsters, Inc., the scream-processing factory in Monstropolis. When a little girl named Boo wanders into their world, it's the monsters who are scared silly, and it's up to Sulley and Mike to keep her out of sight and get her back home.

An orphan little girl befriends a benevolent giant who takes her to Giant Country, where they attempt to stop the man-eating giants that are invading the human world.

Sophie is snatched from her orphanage early one morning by the BFG (Big Friendly Giant), whom she witnesses engaged in mysterious activities. She is soon put at ease, as she learns that BFG's job is to collect, catalog and deliver pleasant dreams to children. She joins him that night, but a mean giants follow them, planning to eat the children of the world.

Pete, a young orphan, runs away to a Maine fishing town with his best friend a lovable, sometimes invisible dragon named Elliott! When they are taken in by a kind lighthouse keeper, Nora, and her father, Elliott's prank playing lands them in big trouble. Then, when crooked salesmen try to capture Elliott for their own gain, Pete must attempt a daring rescue.

For years, old wood carver Mr. Meacham has delighted local children with his tales of the fierce dragon that resides deep in the woods of the Pacific Northwest. To his daughter, Grace, who works as a forest ranger, these stories are little more than tall tales... until she meets Pete, a mysterious 10-year-old with no family and no home who claims to live in the woods with a giant, green dragon named Elliott. And from Pete's descriptions, Elliott seems remarkably similar to the dragon from Mr. Meacham's stories. With the help of Natalie, an 11-year-old girl whose father Jack owns the local lumber mill, Grace sets out to determine where Pete came from, where he belongs, and the truth about this dragon.

A young boy is scared of the monster under his bed. He asks his 6th grade brother to swap rooms for the night as a bet that the monster really exists. Soon the brother becomes friends with the monster and discovers a whole new world of fun and games under his bed where pulling pranks on kids and other monsters is the main attraction.

1989 ABC Weekend Special based on the 1987 children's book that revolves around the twist on the common "monsters under the bed" story that frightens children