Searching for a wallpaper or animated theme for older Java-based (JAR) mobile phones with a 240x320 screen resolution?

To the uninitiated, the term sounds like a garbled tech specification. Let’s break it down:

Imagine the year is 2007. You are on a train in Akihabara, or perhaps stuck in a study hall in the West. You flip open your silver clamshell phone. The screen glows to life.