[britfish]

I was given a car seat/ stroller combo and never used it and Grace was just under 15 lbs. at 11 months. Instead we used the Britax marathon. It reclines so much it works great even for young ones that don't have great posture yet. I kind of figured putting her in the infant snap in type would only encourage me to have her dangling in a plastic car seat from my arm instead of me carrying her close! Definitely try it in your car, we bought a Britax for DH extended cab truck and it didn't work. It fits great in my Liberty though!

We have a jogging stroller for the neighborhood. I now have a Peg Perego Pliko (thanks to Ktates) and I LOVE it. It is small and lightweight but yet fully reclines.

We had a hand me down swing and Grace loved it for months. I think it helped make her world smaller and kept her up from the dog and in her own little area. I wouldn't buy a new one but if you can find a used one it may be a great help. After the swing we transitioned to an exersaucer which was great!
For toys, I would stick w/ small things for now. Pick out a few you think will really work (babiesrus website has great reviews on toys). We had lots of books, stacking cups, a toy you dropped balls in to and it played music and that type of stuff. Grace has always loved music and was very responsive to it.
I would recommend everytime you go to the store picking up one package of diapers. Before you know it you'll have a nice supply and it offsets the cost when you will have babyclothes and other stuff to buy!