"Extra stylus? Battery? Memory? What type? Screen Protector? any Cables? Cases?"

I've yet to lose a stylus. The battery is rechargeable, but what may be nice is an Auto recharge adapter if that's something you think you'll want. Hint: just put it in the car...

The cables come with...

I put screen protectors on mine and cases are a personal choice. Some make the unit too bulky or interfere with the dock. Look at the Rhinoskin make to see if they have one and you drop things a lot.

The one item that is hot is this one -> http://www.pdabuyersguide.com/tips/PalmOne_SD_WiFi_card.htm Just doublecheck if its for the T5. I read it is...

Bob