I've been working on my fantasy novella, tentatively titled, Larakyte, and wanted to find a perfect pet name for the king's newly discovered 'mistress' - I found a great site - Girlfriend Pet Names.
Some of the more unusual 'pet' names include:
Dumpling
Giggles
Hot Pants
Egg Head
Pussy (*g*)
& Pinup.
Just for the record, I went with "Angel". It fit my heroine perfectly =)