I created a "81" centerpiece by gluing small pearl beads onto cardboard stock and hung over our family's antique mirror. Additionally, we draped tulle over cupboards and foyers and placed old photos of my grandmother next to accent decorations (they also served as favors, since some family members didn't have any photos).
Tablescape
I decorated our dining room with banners made out of pearlescent card stock, chipboard letters, self-adhesive pearl stickers and lace. We also hung tissue paper pom-poms and pearl garland. We placed silk flowers and branches in hurricane vases filled with pearls and wrapped it with lace, which served as centerpieces.
You can view more party details here: http://wrightfullysocialized.blogspot.com/2010/07/pearls-of-wisdom-party-part-i.html
Entertainment
Playlist of jazz tunes (my grandmother's favorite music)
Activities
To celebrate our family reuniting, we hired a photographer to take family portraits