Baby Carrier - My personal preference is the Lillebaby All Seasons Complete Carrier. It can be used from 7lbs (most new borns without an insert) until two years old. It has 6 carrying positions and it has lumbar support. Definitely worth the investment. Around three months, I would suggest investing in suck pads/bib for the carrier. They can be purchased on Etsy.
Nava New Black Baby Sling Carrier Baby Twin Toddler Pouch Wraps Carrier