super-personalize yung wedding giveaway! though this is ideal for really small wedding (like 10 or 20 guests.)
what you do is get a polaroid camera (old ones are available at a pretty cheap price online, then you can keep it as your wedding memento)
newlyweds get your guests (one at a time) and ham it up for the camera!
at the back freshly developed photo, sign them as unique to each guest as possible and give it to them right then and there!
precious giveaway that your guests will surely keep!