Play dates?

Has anyone started doing play dates with kids from school? Do you do them at your house or a park/somewhere else? Weekends or during the week? There have been a few moms from my son’s class saying we should get the kids together for a play date but no one really follows up. I also don’t really want other kids at my house as it’s small and I have 2 younger children. My son is now starting to ask for play dates though.

How does everyone do play dates? Or do you do them at all?