The Zoom H2 has some handy features such as: Four microphones that can record on two or four channels, an automatic recording function that can be activated by voice or decibel level, compressors, low-cut filters, MP3 or WAV format recording, WAV to MP3 converter, metronome, and tuner.
This recorder has always given me quality recordings. Just be sure to keep extra batteries around if you plan to use it for extensive time periods. (Note: It also comes with a plug-in power cord.)
I recently bought this very cool portable scanner (Xerox Mobile Scanner SD). It has some great features such as: Allowing you to scan sans a computer hookup or software, scanning PDF and JPEG files to an SD card, and scanning to smart phones. The scanner comes with a padded carrying case, and it’s super light. It should come in handy on the job.