My sister has an excellent design for a spaceship.
First take a house and tip milk all over it (milk is actually an excellent form of glue), then find out exactly how fast the house is moving, from Heisenburg's Uncertainty Principle, it now follows that the house could be anywhere in the universe.
Note: The reason you have to first tip milk all over the house, is to glue the house up and stop yourself from suffocating if you end up in deep space, rather than on some inhabitable planet.
A childhood belief about physics

others believed things like this
- I thought that elmers glue was made from milk, since it had that cow on the glue bottle. — Monty
- I used to believe that when you moved house you swapped house with the person moving into your old house.Anon
- When we were little my sister thought if you mixed cow’s milk and water you’d get goat’s milkAnon
- when i was young i believed that when u moved house the house would come with you !!!
just like a turtleAnon - The Whit house down the street was the real "White House". — SG
- I used to believe that if you opened up an umbrella inside your house that the whole house would fly awayAnon