Yes, I had an invisible monkey friend as a child. But I feel compelled to add that my family lived in Central America, where some children had actual monkeys. So perhaps it's not as strange -- or creative, if that's how you choose to look at it -- as it sounds.
And yes, it lived in the refrigerator. Not the family refrigerator, but my toy one. The monkey wasn't pink, though. The refrigerator was. You can see it in the photo, alongside the pink stove. Well, take my word for it: They're pink.
The guests at my tea party are my younger brother and Chatty Cathy. Which tells some people exactly how old I am.
Since there are no extra chairs or teacups, I'm assuming there were no invisible guests.