Quoting Twin's Mommy:" We never really used our swing either, alot of parents use them to help with the baby's sleep issues, ... [snip!] ... had sleep issues, so both of our swings were a waste too, but it's still a really good thing to have. What don't you have yet?"
I still need the travel system (carseat and stroller). I would like to invest in a bumbo and swing though I know they aren't necessary lol. A cover for the changing pad, a nursing cover, and a monitor. I mean I don't need much more I suppose. Just things I want lol.