Each kid is different.
First kid essentials: car seat, babycarrierbackpackthingy, BOUNCY SEAT. Cosleeper was nice, but not really essential (you can always put the crib beside the bed, really). STROLLER. At the time we lived in a ‘walkable’ neighbourhood, and the stroller did triple duty - baby/toddler containment & transport, grocery cart, nap induction device. Stoller must be actually utile - meaning narrow enough for store aisles, has a storage thing down below, a place for baby snacks etc, easy to steer.
Second kid: bouncy thing made him cry. Hated backpackcarrierthingy. Stroller still good. Didn’t bother with the cosleeper.
In sum, every kid is different, and parent’s needs are a factor too. Our first kid thought nothing of bolting away in any random direction at random times, so the stroller kept him alive (a much better alternative to a leash). The second kid clings tight and it was never really an issue.
