Someday I will have a back yard with a set up similar to this. i love hammocks! Backyard hammock plus tree lights makes magic. I will buy my home and plant two trees for my hammock in the first summer!
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.
If you are having an outdoor reception, consider hanging lights like this, or twinkly Christmas lights strung all around. This is a simple way to create a stunning background for your photos and provide beautiful ambient lighting.