Get more for your money with a growing novelty toy. These bugs will grow up to 600% of their original size when immersed in water. They will shrink as they dry out. Fill up party favor loot bags with growing novelty toys to get more toy for less. Looking for party favors or fun novelty toys? These growing toys are uniquely fun. Just add water and watch these toys grow. Kids will enjoy getting these in their party favor loot bags.