Yes, they are knit flat and then sewn together around styrofoam balls. That part I can handle, I'm a rather accomplished sewer and crocheter, so that's the easy part
I'm missing a scarf for each family and one hat for the second family. The hats are also knit in a flat fashion, they curve a bit, but then sewn together in the back, I thought they would be knit in the round.
How do I know what size needles to use to make the missing scarves, and how many stitches to cast on to get them the right length? And I have no idea where to start with the missing hat. I will take a photo of all of the parts this afternoon during naptime.