Our daycare provides a class list with parent emails. I emailed and invited the other moms to a dinner out to get to know each other and every single one was interested - I think we were all in the same boat! It was lovely and easy to keep in touch because our kids are together in daycare and we have something in common. Not everyone was able to come to the event/subsequent events but some have become good friends. Could also offer a meetup at a park with the kids if getting out at night is too hard.
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