[jamauk]

Is she walking yet? If so, pull behind toys are very popular at that age. There are some great websites for kids stuff (beyond toys r us, etc...) one great one is sensational beginnings. They have a lot of wonderful toys.

You could buy your sister a mother's ring (with the baby's birthstone) or you could buy them both a matching necklace with the birthstone. Obviously the baby couldn't wear it yet, but she could keep it for when she got older.

I have mushy brain right now because I'm so tired, but if I think of anything else I'll post it tomorrow!