* Configure the RPi to send an email to a predetermined address once its network interface is up.
However, none of them are actionable out of the box, and they require some packages to be installed on the RPi in order to work. You can however [https://www.raspberrypi.org/forums/viewtopic.php?f=66&t=79151 push your Pi's IP to your computer/phone on boot], or note down your Pi's MAC and then scan with nmap/[https://play.google.com/store/apps/details?id=com.overlook.android.fing Fing] to find it, or even scan the subnet without your Pi connected, and then again with your Pi connected (then look at the difference between the two scans to see where your Pi is).
== Existing solutions ==