I have written before about the handheld VuPoint Solutions Magic Wand scanner. It is a great tool for use in libraries and archives for scanning documents and even pictures up to 8.5-inches wide (A4 size) and any length. I wouldn't use it on any fragile and delicate documents, however, as the rollers built into the scanner do exert pressure on the item being scanned.
I paid $99.95 for my handheld Magic Wand scanner a bit more than a year ago and I have used it a lot since then. I scan not only things of genealogical interest, but also most of the bills I receive in the mail, owners manuals (after checking the manufacturer's web site to see if the manual is already available as a PDF file), and much more. It is portable and easily slips into a backpack, briefcase, or even the smallest suitcase.
Now I see that the same units are on sale on eBay, listed as "manufacturer refurbished," for half that price: $49.99. That price even includes free shipping. Customers located in New York will pay 8.675% tax but the item will be tax-free in all other states. At this price, it only ships to U.S. addresses.