D.K.
As a parent of twins, I just wanted to say - I think a joint gift is fine, as long as it's physically big enough that they both can open it together, and has plenty of pieces that will allow them to play together without excessive fighting. A box of Megablocks is perfect, IMO. If you do buy 2 separate gifts, it's better to have things that are very similar but different - like a PP said, 2 similar books. 2 completely different presents are difficult for twins, I think. At this age, anyway! Like, I wouldn't buy a truck for the boy & a doll for the girl. When my kids get 2 completely different presents, there's usually a lot of jealousy & sharing issues... and we sometimes have to go out & buy another of one of the toys later on!