David Lich struggled with the lack of full-featured, sync-able task and memo apps on the Palm Pre. He finally settled on a combination of desktop and mobile solutions including Basecamp and Backpack. He details how he puts it all together in "Getting Things Done on webOS with Basecamp and Backpack."
Here he explains how he drags Basecamp to-do items into a "PRIORITY" list:
One of the great features of Basecamp is the ability to drag and drop items between to-do lists and within lists, and also reorder the lists themselves. I have created a to-do list called “PRIORITY” to which I drag items that I want to accomplish today.
And here he details how he uses Backpack reminders:
Backpack has a “Reminders” function that allows the user to establish individual and recurring reminders for specific dates and times. It can then be configured to send out an e-mail, text message or both at the scheduled time. I actually use both. I have an e-mail sent to my Exchange account, and have established a rule in Outlook to automatically move each e-mail with “Backpack” as sender to a separate “reminder” subfolder of my inbox. In addition, I have a text message sent to my Pre which, of course, shows up as a notification. It is truly hard to forget something when it now appears on my desktop in Basecamp, in Outlook in a separate inbox subfolder, and on my Pre as a text message with a notification. I’ll have no one to blame but myself if I somehow manage to ignore all of those reminders.