More to explore:
Balloon and embroidery floss jack o' lanterns!
DIY Halloween : DIY Lifelike o' Lanterns : DIY Halloween Craft
Lifelike-o'-Lanterns | Step-by-Step | DIY Craft How To’s and Instructions| Martha Stewart
martha stewart's balloon pumpkins :)
See the "Lifelike-o'-Lanterns" in our Halloween Crafts Ideas gallery
If they're edible, cake and Fonfont
Balloons filled with flour