Your customers might find good use for a portable scanner-- which is where the Doxie Go self-contained scanner comes in.
The Doxie Go is battery powered (doing 100 scans on a single charge) and carries expandable built-in storage saving up to 600 pages or 2400 photos. It scans at 600dpi resolution, with automatic contrast, rotation and cropping functions.
The company includes Doxie 2.0 software-- allowing users to sync scans online and create searchable pdfs (via ABBYY OCR technology) and multi-page stacks.
It sends scans to PC using USB connection, while an optional iPhone Sync kit sends scans directly to iDevices.
The Doxie Go is already available for pre-order, and should start shipping from November 2011.
Go Doxie Go