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)
Polaroid photo booth backdrop - great for DIY photo booths
Lighting for weddings has become very popular for the reception and the wedding. Here are some awesome wedding lighting ideas. Miller Lights can provide the lighting for you.