I've just finished writing a little addon for LiCe v5.2.x that supports the wonderful Pushover.Net service.
This means you can get notifications to your device when you get a Private Message or someone says something matching your Auto-Reply (/AR) buffer. Handy for when you're not looking at your IRC Session but don't want to miss a message or mention.
You must have Pushover installed on your Device for this to work, it's a paid app from the Play Store or the App Store. Register your device and get a User Key, then create your own Application to get an Application Key.
Put those into the settings (/PSET) and then off you go. You can tune when you get messages pushed using /PTOG.
Note: Updated to version 1.2!