Flexible As Needed Sitter

We would like a sitter to assist with our two kids on date nights or as needed to assist family members if we travel out of town. They are five and six this year. We would need someone comfortable with taking our kids to activities, if needed. They are pretty easy-going kids that like hanging out so ideally it would be a sitter who doesn't mind participating in activities (drawing, outdoor play, video games, board games, etc.) with them. We like someone to make sure they pick up after themselves as well as assisting them in cleaning up after themselves after meals. We don't have any pets. Ideally someone with their own transportation is preferred. It would be really nice if there is short notice availability, too.