Part-Time Nanny - Two Boys Aged Four And Two

We're looking for a part time nanny to help with our boys aged four and two. We previously had a nanny two days a week from 11/23-8/24. We're flexible and looking for any level of help within the hours listed. We could do as little as two afternoons a week or even consider an irregular schedule. G (4) goes to School five days a week 8:15-11:30. His brother H (2) goes two days a week 8:30-11:00. G no longer naps. H usually naps 1-2 hours around noon. Neither have allergies. We try to get out of the daily with walkable options nearby as we have some museum memberships. We have a vehicle with two car seats available for getting them around. Flexible on if we start the day at school pickup, or around noon after we're home. No expectation to prep dinner, but lunch and snacks for kids would be needed.