For one of your table options grouping floating candle vases together is a pretty option for a non-floral centerpieces. To add the "wow", tint the water in some of the vases a dark purple and some a light purple and float gold candles.
Place cards and favors in mini pots of moss. Covered with a glass, each looks like a mini terrarium. Fill a 1 terra-cotta pot with moss, insert twig in center, and glue a name tag to twig. Cover with a glass, which can be used for drinks.
Rustic Autumn Wedding Inspiration in Rich Shades of Fall