Gadgeta for coping with new baby

I am 31, have had RA for 15 years and have a 10 week old baby. I am currently off most of my medication and experiencing a flare up, particularly in my wrists, hands and knees. I have gadgets to use in the kitchen to help with my weak hands. Does anyone know of anything to help with lifting or carrying my baby? I have looked into carriers but just don't know where to start. Has anyone in a similar situation found anything useful?
I also can't get down on the floor to play with my baby and am starting to get neck and back pain from leaning over him on his play mat. Any tips?