Haha..if it's an iPod Nano plus got silicon case then 99%
confirm safe..haha..no moving parts inside ma..so should be no
problem..
Last time I saw a video where they tested the iPod Nano..they
dropped it from standing height, rode a bike and dropped it, drove
a car at 15km/h and dropped it out of the window and at the end, as
a kind of finale, drove a car over it! 
Surprisingly, the Nano was still playing music even after being
drove over..only the screen and scroll wheel spoilt..haha..
