Inexpensive Party Decorations - Balloons are a great and affordable party decoration, especially if you blow the up yourself. I think they make an even bigger impact than helium balloons when hung upside down from the ceiling like this.
Valentine's Day DIY Party Favors & Free Printables
Possible centerpiece idea. Tie balloons to current vases Balloon Centerpiece using mason jars.like this idea you can fill the jars with whatever you like - Candy for kids, shells, colored marbles, flowers, themed items. A Good idea to shelf.