From time to time, someone asks for help in finding a notary public.  We recently found a mobile notary service that will come to you, on your schedule, seven days a week.  Better yet, they will bring along a witness if needed.  The upfront charge for us was $50, as we needed the notary and a witness (in addition to our dear neighbor who made herself available).  Standard document charges also apply.  They're on the web at www.notaryneighbor.com.  The phone number is 412 287-1109.