Haha, PJ, I have a similar story with my wallet not too long ago. But I digress.
I have found the missing bottle of paint. I sometimes sit my model on top of a jar of paint with a 2 x 1 inch piece of foam (upside down sanding sponge actually) on top the lid to keep it from scratching the model. Well, the foam was like a mini cammo net hiding the bottle... blast! well at least I found it...