In my gym shoe, in my purse (it fell in), in the bathroom.
When my blue ipod nano disappeared, my nephew told me a few days later that his mother (my SIL) had just "bought" a blue ipod nano. A week or two after that, it was exactly where I had left it, but with a napkin placed neatly on top to suggest it was just hidden.
Sorry, lol, I needed to vent. This was like 3 years ago, I should be over it.
Mine fell into my friends couch and was all the way underneath all the springs. it eventually fell into the covering underneath so we cut a hole and got it out.
In my car, it fell into an obscure crevice between the bucket seat and that central thing that holds CD cases & has a cupholder on the end. I was pretty distraught until I found it again. Had to mentally retrace my steps over & over.
The washer! Eek. Luckily, it still worked even after going through a full cycle!
I have a friend who dropped his getting out of his car and didn't notice until he got into the car to leave again. This was in a parking lot. It's a miracle it was still there. Hope you find it!