Activity of kirstycat

I can't believe I'm getting bogged down thinking about chair covers! I'm having plain white chair covers with navy bows to match my colour scheme. I would also like to have some kind of embellishment on the bow - a spray of crystals or something...

I'm looking for some ideas for those special touches that will make people remember my wedding. I don't really know what - something that will get everyone involved and just make the day that bit more special. Anyone got any great ideas?