Take water balloons and dip them in wax so you'll have gorgeous luminaries and not a million glass ones you don't know what to do with.
Organize all those wedding cards you don't know what to do with. Turn them into a coffee table booklet. All you need is binder clips & a hole punch!
Guest Signing Stones with Vase. These are so cute I'm getting these for my reception tables
Making your own wedding invitations using Microsoft WORD!