Inventions include a multicultural singing doll, a wacky worm and a party cannon.

The mentors and judges are faced with tough decisions when they are presented with unique toy inventions that include a whimsical dual-sided book, a ballerina doll, pocket-sized cars, sweet-smelling fruit plushes, and a pinata in a backpack.

Passionate toy inventors present the mentors and judges with unique concepts that include life-size construction tubes, sinkable building blocks, a new idea for a board game, a therapy doll, and a lightbox in the shape of a terrier.

Toy inventors present one-of-a-kind concepts that include a walking dinosaur, multi-generational dolls, a slingshot parachute, and a plastic-card building system.

Amateur toy inventors get the opportunity of a lifetime to present their innovative concepts, such as a maze-building toy, a dueling wizard game, playful plush aliens, and dolls with interchangeable hair.

Passionate inventors with big dreams present toy concepts that include a candy press, an adorable curly-haired doll, plush toys with interchangeable magnetic parts, and a simple game with an old-school feel.

Hopeful inventors seeking an opportunity to earn a coveted spot in the finals present unique toy designs that include a card game that incorporates voice acting, baby's first robot, and a liquid art toy.

The finalists from each episode return to The Toy Box, where the young judges decide who will have their toy made by Mattel and sold exclusively at Toys "R" Us.