Sears.com has the Craftsman Clean N Carry® 2 gal. Wet-Dry Vac, Portable Tank Style, 1.5 Peak hp for $19.99 + shipping or choose instore pickup to save on shipping.
It's small and portable, and perfect for someone who may be older and not want to lug around a full size vac. This is good for the car and small jobs around the house.