Heart garland - super cute and SO easy! *Update* C and I made this today; just used red and alternated with cotton balls (easier to string). He said, "whew, that was a hard project!" but he's pretty proud of it! :)
How To: Surreal DIY Cloud Backdrop (supposedly for weddings but probably awesome in my house)
Storybook Paper Roses bouquet. It would killlll me to rip apart a book for this, but this is SUCH a cool idea cost effective. Smaller ones can be made for the bridesmaids. My only concern is if the ink rubs off on the dress.