I'm not sure if this is how everyone does it, but where I'm from the exit from the church is more of a "grand exit" than the exit after the reception - granted I'm not sure I've actually ever stayed the full time at a reception (most of them have gone well into the night.) For the church exit it seems that handing out bubbles is the most common thing to do. I'm not sure I'm sold on it because my parents alone have a stash of at least 10 half-full bottles of bubbles they've gotten at weddings over the past couple years (my mom keeps EVERYTHING, lol). I kind of feel like it is a waste. On the other hand, it's also the easiest because rice and birdseed are not allowed at our church. I've seen that some people do ribbon wands these days but I'm not really into that, again, kind of seems like a waste (what do you do with them after?)
After that book of an explanation, are you doing bubbles or rice or wands or something else? Any ideas out side of the box? I'm stuck.