A couple of things I'm going to try..

Spotted these interesting utilites in Palmaddicts.
One is a way to get files into your Palm's SD. My daily task is to transfer Plucker PDB files into my Treo's SD card (and plucker folder) after conversion of RSS feeds and sites by Sunrise. What I use is Card Export II and map it as a drive on my PC. Then I created a simple batch file to do a Copy:*.pdb /Y over to the SD card. PalmAddicts mentions a utiity by Microsoft called SyncToy v1.0 for Windows XP. So if you don't want to play around with batch files, here's something which is free and allows you to copy, move, delete PDBs from your PC to your Palm's SD card (and indeed any file or folder)
Another interesting thing if you use iTunes is iTunes On Treo 600 and 650. Apparently, Mass Storage Synchronizer — the add-on from Tea Vui Huang that adapts iTunes for Sony Ericsson, Nokia and Samsung phones — is now compatible with Palm One’s Treo 600 and 650 smartphones!

Well, things to try for the holiday season coming up!