Here is my Monday dump of ideas with no particular rhyme or reason ;o)
You won't believe this... a balloon over a glass makes an instant vase! Such an inexpensive way to help decorate your next event! Add some rhinestones or ribbon for a little extra touch! Source and tutorial
A great pinwheel decorations to add tons of color and pattern! Source and tutorial found via gordon gossip blog
Inexpensive way to do tons of lighting - wax candles made using balloons! Source and tutorial
Need inexpensive ways to display candy, macaroons, cookies, etc? Dollar store trick! Source and tutorial