Secular grace?

My wife told me yesterday she'd like to start saying "grace" of some kind before our meals -- obviously nothing religious, but sort of just a moment to be appreciative that we have family and food. I'm not so sure how I feel about it... On one hand, I think there are some positives to this, not just in terms of mindfulness about what we have, but also I think that one of the challenges to families sitting down together for a meal is if there is no delineation as to when the meal actually starts, and having a pre-meal ritual can help with that.

On the other hand, like many "non-joiners" (as atheists tend to be), it is not just the philosophical objections to religion that bother me; on a personal level, I just don't like the trappings most of the time. I don't think I would like saying "grace" very much, even a purely secular one. Also, I think it will be easy to slip into things I that I do have a philosophical objection to, e.g. we tried it last night and I refused to participate after my wife said we should bow our heads. Who am I bowing my head to? Nobody, that's who! heh...

Does anybody out there do anything like this? Any suggestions?