I'm on the go a lot so I have a Samsung i300 which is a combination color Palm Pilot and cellphone. I really could do all of my business with this one device. The cell number is the one that is on my business cards so this is how I handle my bookings. I can also browse the web and do email with it. It's on the Sprint PCS service.

Even though I'm fairly fluid with the Graffiti writing system, I don't use it except when I have to. I prefer to do everything on my computer and then download it to the Palm.

Some applications I use:

AvantGo - a free service that automatically downloads highlights from my local and area newspapers as well as WSJ, CNN, USAToday, PC World, Space.com, etc. Very handy. Can be updated using the cell phone but easiest to update from a web-connected desktop.

Documents To Go - converts MS Word and Excel docs for viewing and editing on the Palm.

Pocket Quicken - a pocket checkbook

2Sky - current skymap (I'm an astronomy buff)

Games: Acid Solitare, BeJeweled, Monopoly, Scrabble, Mars Needs Cows, Mahjongg (great for waiting in the doctor's office)

Some mobile-phone/Palm apps I use:

Fedex/UPS/USPS trackers - tracks packages.

eBay - check on any item/track auctions

Booking Zone- lets you book any kind of service, from music to plumbers.

Palm VNC - PC Anywhere clone for remote control of computer

Brand Finder - let's you locate anything by brand in any city, like "Taco Bell".

555-1212 - phone directory for any city

One project I haven't found the ideal solution for yet is that it is possible to use my i300 to take credit cards for selling CD's at my gigs. Several companies offer this service but they all want fees that are not quite viable yet. Still keeping my options open here.