iPad is my friend...
On scene entering of reports on revealed audits, all items checked as they are entered into the report, no mistakes or issues, and saves me tons of time. Grocery stores, etc for trendsource, etc entered right after shop in the lot. 2GB internet is 25 per month on ATT and is worth every cent (and is tax deductible). Shops with photos (i.e marketforce) I save the report and upload the photos at home. Most companies let you upload receipts later so I scan them at home. Plus the iPad makes my revealed audits look more professional.
I have a cheep digital camera from about 5 years ago that works for photos, stopwatch, digital voice recorder. I have thought about one of those internet dongles (t-mobile) for my laptop.
I have even entered FF shops on site because the iPad just looks like an internet device...
BTW the ipad is expensive, but you can get one for about 500 dollars, and it doubles as a wonderful media and game device...