My sister used to have two piggy banks.
One was where she kept her allowance money, which was well hidden. The other was filled with 5 pennies and left on her nightstand as a decoy for would-be burgulars!
A childhood belief about criminals

others believed things like this
- When I was little, I believed that banks were places where anyone could go in and take some money for free. Anon
- I used to believe that banks were owned by rich people who gave away their money.— Lyssa
- I used to think that burgulars used to kill people if they ate burgers — angel
- I used to believe that coin change could turn into actual paper money if you left it alone for a long time. — Marcus O
- I used to believe that as I ate food, I filled up, and that once I filled up completely, I would die. Anon
- I used to think that of you ripped a dollar 100 pennies would fall out of the rip.— Glad I never tried it