i'm not a notary but i can suggest a means for a notary to make some good money ($$$) as evidenced by my recent experiences:
be an after-hours/weekend notary that will come to senior apartments, assisted living centers, etc. many instances in which a senior needs a notary involve their adult children who work during normal bsns. hours, live distance away from their parents. we have a couple of notarys that will come (by appointment only) to a senior apartment (the common area vs. the actual apartment) to provide services. they charge $45 or $50 plus the normal notary fee (high i know, but if your mother has limited mobility or requires a wheelchair lift and your car does not have one it is well worth it). another bigger money opportunity is notary's that will go (again by appointment only) to the local jail. you have to find out your city or county's regulations on how this works, but i know of individuals who have paid $75 or $100 for this service (in addition to the regular notary fee).