The interior of Patrick's home disappears when he and Spongebob go to bed.
When Spongebob and Patrick "rebuild" his house, Spongebob puts the house on his head and his nose pops out the door, appearing to be at least a foot long. When the house breaks apart the nose suddenly shrinks to a few inches.
Squidward is taller than usual in 'Home Sweet Pineapple'.
When Squidward jumps into his bathroom, a sock and underpants fly out of the room. But he doesn't wear either.