Alternatives to christenings etc

J and I are not at all religious. I was christened as a babe, he was not, but neither of us are church goers or remotely religious. I like to think I am spiritual, but I am not a fan of organized religion.

So, when Finn was born, we did not christen, baptise or otherwise him. We would have had a naming day type celebration, but at that time, we were still in Warrnambool, and family was a considerable distance. So we didn't do anything.

With child #2 on the way, I have been thinking about this again. I don't want to give it a naming day celebration that Finn didn't have, so I thought I might do something combined for them, of my own invention! This will be our last child, so it could be some sort of completed family type thing... And if we do, do we get some sort of 'replacements' for godparents. And call them something else.. guides? What? Something non spiritual, but I would like to have some kind of people each child knows they can turn to etc.

Help!