Did you have an imaginary friend as a child? Care to share any stories?

My older brother had an imaginary friend before I was born called Harmony and then years later I had one called Melody, I have a vague recollection of us all going for a family picnic and when driving home I kicked up such a huge fuss because we had forgotten Melody that my dad had to drive a good ten miles back to the park to pick her up. I’ve just called my dad to remind him of this and he said it was a good job we did drive back because she was still there!