I wouldn't really call this one mobile. It's 18" wide, 8.5" tall, and about 13" deep... without the paper feed trays. Plus, it has no provisions for working off batteries - it uses a standard wall-type power cord. The big draws for me with this were that it has an autofeeder, it's a 4-in-1 machine (saved me the misery of buying a new fax for the home office), and it was $130.

Do the ROD offices you work at actually let you personally scan docs? That's amazing to me. The ones around here are, shall we say, touchy about reproductions by ANYONE.