How to find a lost ipad without find my ipad?

I lost my ipad and I have no idea where it could be! I tried "find my ipad" but it said I hadn't set it up on my own. Anyway to jog my memory, or how to find it.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).