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.
20 DIY Wedding Favors Your Guests Will Love and Use
How to make a ribbon chandelier! (Hula hoop & ribbon) party decor or in a kids room! Or make a huge one from a hoola-hoop and keep it hung from a tree or patio area for the kids to enjoy and play with --
Fourth of July Crafts for Kids: Flour Lawn Stars. Cut out star stencil, sprinkle grass with water (to make the flour stick) and then sprinkle with flour. This idea also works for Canada's July Birthday. Just substitute the star for a Maple Leaf.
little paper hearts //yarn or some other type thin cord. Cut pieces from book/newspaper and fold over yarn/cord. Punch hearts into paper. This would be great as a garland for Valentine's day. Use other style punches for other holidays.