The socks are a super vague one, first you need to go to a shutter at the front of the hotel and fly or fall into it. It's on the upper right side, facing the hotel from the front. Then, when in the simpsons room, go around the family and jump through the bars of the prison. Interact with the fast homer to access the TIM X room. Then you've got your socks.
Not going to explain the others, but the ball and the star in the sand don't do anything special.