Q: how to find my ipod with icould eve if its not connected to the internet?

All you can do is look for it the old fashioned way. Apple will not help.

Change the passwards for all accounts used on the iPod and report it to the police.

If you can't see in in iCloud, you can't wipe the iPod.

Yes you have to change all that stuff.

You go to a police station and fill ut a lost/stollen property report.

Once you wipe the iPod via iCloud yu can not longer locate the iPod via iCloud. You will have to find it the old fashioned way.

"Device does not appear in Find My iPhone

This can occur if:"

"You have already initiated a wipe of the iPhone, iPad, or iPod touch. The device will not appear on the page until it is reconfigured with your iCloud account information."

Above from:

iCloud: Troubleshooting Find My iPhone, iPad, iPod touch, or Mac

Yes, wiping it deletes/wipes the find feature.

The iPod is empty. There is not longer any information of yours on the iPod.  A person can restore the iPod via a computer for thieir own use. It will not have any of your information on the iPod.

Restoring/wiping the iPod does not remove the photos from iCloud. For info about PhotosStream see:

iCloud: Photo Stream FAQ

I do not fully understand our question. Since you iPod has been wiped, ithe iPod can;'t add any photo to yur photo stream.