Bill and the Muggle Remoter control
It all began when Bill was about three. He loved going to my parents' house overnight. The only thing was, was he would hide the remoter... no, it's not remoter... oh the remote control to my parents Muggle television set. He would hide it so he would have an excuse to stay.
Once Bill must have hidden it really good. My parents had warded their Muggle appliances from accio and locating charms. They had no clue where he had hidden it. They had searched their whole house. Even in the normal places he hid things.
To help them out, I brought Bill over (although I was pregnant at the time) and told him we were going to play "find the remote control". He searched high and low and he must have remembered where he had put it because he ran out of the room. He returned a moment later with the stubborn object they had been searching for.
Whenever I tried to ask Bill where he had put it he always said, "No tell. Secret," and would scamper off to play. My parents never figured it out either. Although they have since learned to hide any of their Muggle objects that a younging could hide. I suppose Bill taught them that much.
I'll never tell my parents this, but I thought it was really sweet how he didn't like to leave. And that he would go to such lengths to stay.