S5·E27 Floating Boat

Tinky Winky is asleep but he gets woken up by the Magic Windmill spinning. The Teletubbies watch children making a boat as they then put it in a paddling pool to see if it will float. Tinky-Winky's bag falls into a puddle, and as he watches it, the bag floats from side to side and all around the puddle. Tinky Winky feels like floating too, so he dances a floaty dance.