How do I find my iPad, must not have find turned in?

Here is Apple’s advice for lost or stolen devices:

If your iPhone, iPad or iPod touch is lost or stolen – Apple Support

Use the Find My app to locate a lost or stolen device – Apple Support

If the Find My iPad feature was enabled prior to it being “misplaced”, then if active, you would stand a good chance of locating it. 

However, if the feature was not activated prior to being misplaced - or the iPad has been inactive for more than 24 hours, the last known location will not be available - and the opportunity to use technical means to recover the iPad have been lost.

If you did not have Find My enabled before you lost the iPad, you will have to walk around looking for it. Do you see the option to play a sound on the iPad?

~Lyssa

If you do not see the option to play a sound, then you will have to just walk around looking for it.

~Lyssa