A little baby powder on your inner thighs helps curb sweating, squeaking, and chafing.
If there's a chance it could be hot during the ceremony, make or buy programs that double as fans.
And use veil weights to keep the bride's headpiece from flying away.
Attach tiny weights to the bridesmaids' hems to keep their dresses from flying up on a windy day.
Have activity books on hand to entertain squirmy kids.
When you're unwrapping gifts, ask someone else to write down givers' names on sticky labels so you can keep track.
Register someplace that lets you exchange duplicates or unwanted gifts for cash.
Figure out your seating chart with color-coordinated sticky notes.
Wedding/bridal shows offer tons of free giveaways and access to vendors.
Or use thank-you postcards to cut out the envelope entirely.