Saw this in a post on Lifehacker today, thought it was pretty clever. It is made for iPhone, but works on a Pre, just needs some tweaking to look a bit better.

How it works: store a .html file in your Dropbox public folder. Get the share link. Open this link in your WebOS browser and bookmark to the launcher. You can customize the .html file to your liking.

Extensive explanation here:
elastic threads - Download, Install, Use iphome