Lovely idea for each ceremony chair - but a bit more English would be - when the Bride & Groom walk your way, throw some petals and shout hooray! flower petal confetti cones....instead of rice, birdseed, etc.
The maid of honor could put this together. Have the mother of the bride, mother in law, bridesmaids, and friends of the bride write letters to the bride, then put them in a book so she can read them while getting ready the day of. The last page can be a letter from the groom. I hope my bridesmaids are this awesome