BEST IDEA EVER! Floating canopy: the balloons are attached to the ground with fishing line, probably the coolest thing ever. (and it doesn't have to be for a wedding, could do for an outdoor birthday party)
A water balloon with a glow stick on the inside, in a stocking, hung from trees, patio cover, or the ceiling. Same pin elsewhere said: "Put a glow ball in a white stocking and hang many from trees or the ceiling." But what are glow balls?