This would be hard. But kids certainly manage to find products, when they love them. e.g. flash games ~10 yrs ago, certain iPhone games that everyone loves now,

This would be hard. But kids certainly manage to find products, when they love them. e.g. flash games ~10 yrs ago, certain iPhone games that everyone loves now, Snapchat now, etc. Word of mouth. Making a product that 100 kids are obsessed with, and go from there.