Willy Wonka: Charlie, don't forget what happened to the man who suddenly got everything he always wanted.
Charlie Bucket: What happened?
Willy Wonka: He lived happily ever after.
When Charlie and Grandpa Joe drink the fizzy lifting drink and are floating in the air you can see the hook that is connected to the wire that Charlie is being held up by.
In the beginning of the movie, when the candy store owner is singing the candy man song, there's a spot towards the end of the song where he lifts up his counter to let all the kids in. Watch the little blonde girl as she gets walloped in the chin by the counter.