Lace lanterns are made by overlapping lace doilies on an inflated balloon and brushing fabric stiffener (or wallpaper glue, or even white glue) onto the doilies. Make sure to cover whole thing with the glue.
Sparklers create a grand exit -- the next best thing to fireworks! Make it easy for guests by providing buckets of sparklers. Line walkway with lit votive candles so guests can easily light their sparklers.
I cannot stand when people clink on the glass repeatedly. Fun wedding idea - the Kissing Menu. (Things to do to get the couple to kiss . instead of the annoying and all-too-simple glass clinking!) So cute, minus the booze.