Some folks in my family are lighting candles in the hopes that my husband and I will see the light and baptize our two kids. While we appreciate the concerns about our kids' spiritual well-being, no plans are even being vaguely considered to save our kids from the fires of eternal damnation, mostly because we don't believe in them.
There are options, however, for those who feel the need to have some sort of spiritual ceremony in honor of a new baby's birth. Baby blessings are an increasingly popular option for mixed-faith parents. Dad's Jewish and Mom's Lutheran? There's probably a pastor in your area who can draw from both of your religious traditions and help you create a christening that will have all of the spiritual weight everyone desires.
As for us, we're still looking for the officiant who can hold our kids of off the edge of a cliff a la The Lion King and announce their names. It would be even better if he looked like a baboon and had the voice of Robert Guillaume. Our search continues.