Appropriate gift for a Baptism

[Wires]

I've been asked to be the Godfather to my best friend's most recent child and will be attending the baptism next weekend. Usually gifts for infants are fairly straightforward - an outfit, toy, etc...

However I think this type of event may call for something a little different. I'm not particularly religious nor is my friend - his wife a little more so but hardly fanatical. Neither of them attend church on a regular basis and I think the baptism is done more as a tradition as opposed to wholly religious event.

Excluding weddings I probably haven't been to church for a religious event since my own baptism so I feel a little out of my element in searching for a gift. The father and I have been tight since university (we're both 35 now) so I would like to purchase a gift that will have some significance.

Does anyone have any ideas or experiences to share that may be helpful?

EDIT: The child is a boy.