We have a 4 year old girl and 2 year old boy. They love playing together and learning new things. We have multiple play areas in our house with a fenced in yard that has a play set.
Oldest is in preschool 3 days a week for 2.5 hours.
Play with the kids and keep them engaged. They love to use their imaginations, color, be read to and run around the house. No expectations on any household tasks, other than any cleanup associated with the kids play area or feeding.