What did you get secondhand? [Ns]

Hey folks,

Just checking the crowd consensus on what to try to get second hand. So far, we've been able to score decently on clothing (currently 14 weeks). I know we obviously have to purchase a car seat new, but did anyone find that buying the car seat and stroller independently of one another (not a set) was a mistake? I see tons of high-end strollers that look barely used on marketplace for a fraction of the price. Has anyone gone that route on a stroller? Crib?

Give me your thoughts and tips!