I used to believe that stars came from the floating sparks of a campfire. More than once I tried to throw ash in to the sky hoping a star would "stick".
A childhood belief about plants

others believed things like this
- I learned in the first grade that the Sun was a star just like all the other stars, only it was MUCH bigger.— Geoff
- i used to believe that stars really were star shaped, i realised at the age of 34 how wrong i was.Anon
- I used to believe that it was the Star Wars "Tri-ology" instead of the Stars Wars "trilogy".— keith Key
- when i was was little i thought that pop stars were stars in space would pop— roman honytoast
- I used to think stars were really shaped like you draw stars!Anon
- When i was younger i thaught that thunder came when two skies crashed and the ligthning was sparks— Rickard