Some children play with their toys, give them names and pretend they are real. Others have imaginary friends - wolves, monkeys, elephants.
My son has Lid. Lid is a plastic milk bottle top.
Seriously, is that normal?
He says things like...
"I have two friends - Matthew, and my friend Lid".
"I am watching the dvd with my friend Lid"
"Have you met my friend Lid?"
"Mama! Say hello to my friend Lid!!"