Babysitter - Full-time / Part-time

We have a boy and girl, 1. 5 and 3. 5 years old. I am a stay-at-home mom that is looking for 1-2 morning/afternoons a week of free time. Some days would be ok to stay at the house and I will be out running errands. Other days could take the kids to parks, play places, library, etc. Hoping we could also get the same caregiver to watch the children one evening every other week, possibly every week. Flexible on time, but it would not require putting the kids to bed. Just playing with them for a couple of hours so parents could go out.