she says she was inspired by her mother, who suffers from raynaud's disease.protect a device most of us use every day. >> this is my cell phone case holder that i made out of bubble wrap and duct tape. >> autumn's protective case nabbed her a $5,000 savings bond. >> we've done this for five years, and every single one of the entrants the many hundreds and hundreds of entrants we've had have actually been creative, exciting, interesting and really show what young people in america can do when they put their mind to it. >> this floating garden -- a way to help people protect their crops in flooded areas -- took the grand prize, and a $10,000 savings bond. >> it's a platform with a box in it with soil and garden, basically, and in the box under it is bubble wrap, and when you put that in the water it floats. >> these winners say you don't have to be a math or science whiz to walk away with one of these awards. >> i was just sitting at home, and i wanted to buy an actual cell phone case for my cell phone, so i'm like "why don't i just make a cell phone case holder