By the time Emilia was three months old, she was sleeping happily in her crib (much to my own unfounded concern and worry... I worried for no reason frequently as I adapted to new motherhood). Over the next three months as her motor skills developed even more, she would put everything in her mouth, chew on anything she could, and roll and scoot as means of mobility. She started sitting up and liked being held in a standing position. Accordingly, a lot of the consumer goods we came to appreciate during this time were those that ensured continued safety, comfort, and stimulation.
She had developed enough head and neck control to sit safely in her Bumbo seat. And with the play tray, this seat became her first eating chair. I am reluctant to call it a high chair since we kept it on the ground but it gave her a nice spot where she could sit up, play, and eventually try new tastes. We waited til she was six months old to actually start solid foods but the seat was helpful long before that as a way to keep her propped up and able to be in the mix, socially.
Although it wasn't perfect, we liked our breathable bumper.
As I said above, Emilia began scooting and rolling all over between three and six months. With increasing mobility, our beloved swaddle was no longer safe. We transitioned her from the swaddle when we were in New York right after her four month birthday. As a crib sleeping baby, her risk of limbs getting caught between bars cause some worry. We used a breathable bumper to guard against suffocating. Of course and as demonstrated above, this bumper was not a perfect solution. Still, we were so glad to have it during this period of her growth.
At night she typically slept in a sleep sack layered with a footed sleeper because it was still quite cold in Pittsburgh. We loved the Halo Sleep Sack Swaddle because she had plenty of kicking room plus the optional swaddle wings (since we were still swaddling her at three months). She had all kinds of footed sleepers but because our house is somewhat drafty, I preferred fleece or thicker cotton with a zip closure rather than buttons like this one from Carters. This way changing her could be done swiftly. We would still typically layer onesies underneath most of her outfits.
When it came to bundling up before leaving the house, we learned our best bet was to move swiftly. She came to get frustrated when we would put her in warm clothing while still in the warm house so the faster we could make the process, the better. We were handed down an adorable, thick Gap Baby bunting that had two very easy zippers for closures. This one is quite similar albeit for fall and early winter rather than the coldest of the cold days.
We still prefer the Ergo to our other carriers. I love the big zip pocket in the front. I regularly wear her around the neighborhood sans purse because I can fit my phone, keys, and money in there with no problem.
Her favorite toy during this time became the Winkle. Its rattling sounds, bright colors, and highly grab-able/chew-able tubes were the perfect design for her grabby hands. She loved gumming it and shaking it and does to this day! We accumulated a cache of teethers but her favorite one for on the go was her "car keys." We kept them tethered to her car seat via these "lots of links." The links themselves are fun to play with and chew. And we still keep her keys handy for trips.
Because she enjoyed a supported standing position so much and seemed fairly stable, we also began using the Exersaucer. Yes, it looks hideous. But one of the compromises of this new life is to accept the practical over the aesthetic. We needed a spot to put her into that wasn't her bouncey seat (which she basically outgrew/became bored with) or her swing (which she would only tolerate when already tired).
We still used her sound machines and video monitor religiously. We still loved her hooded towels and many blankets. She still played with her baby gym and some other things from my Newborn to Three Month Favorites post. But all of the above became our most helpful items as she continued to grow and change.