As a first cut, here are the devices I currently use but would like to combine:
- BlackBerry Curve (phone, email, web browser, text messages, camera)
- Digital camera (8Gb card, reasonable zoom, etc.)
- GPS (Garmin eTrex, no Bluetooth or USB port)
- iPod (60Gb)
- iPod (8Gb)
- Garmin Forerunner 301 (GPS, stopwatch, heart monitor)
- Nintendo DS (only stylus device in the bunch, soon to include the Korg DS-10)
I realize that most people think "driving directions" when they hear "GPS." I use Google Maps for that; I'm a geocacher, so my requirements are a little different. I want to run Google Earth with a "you are here" pointer and be able to pick layers with a stylus.
I don't necessarily need to hold this thing up against my head; I don't mind using a headphone jack when using it like a phone, but I'm not thrilled with the Curve's stereo headset; I like to be able to pick up ambient sound via my open ear while I'm on the phone in the car: a stereo headset is too immersive, and using it with just one earpiece is clumsy.
And that's just for starters; beyond that I really want a Gordon Bell data acquisition application with decent search on the fly. And I really want a health monitor that will read my vital signs on the fly and monitor my temperature, pulse, blood composition, etc. I want this device to be touch-sensitive all over. And it should be rugged and waterproof.