Wedding Message To Put On A Card Wedding Centerpiece Ideas?

Wedding Centerpiece ideas? - wedding message to put on a card

I want to do something fun and different for my wedding center piece, and I thought getting blank cards and leave a few cards, colored pencils and paper neatly in the middle of the table (with a vase with 2 pink) so I could special guests Thoughts, comments and messages and put them in a book of debris after the wedding to write. Is this a good idea, it seems too trivial or class, or lower?