Hobo Ninja offers the Teenage Mutant Ninja Turtles Plush Backpack in Leonardo Blue (pictured) and Michelangelo Orange for $7.99. Even better, coupon code "MASTERSPLINTER" grants free shipping. That's the lowest total price we could find for any ninja turtle-themed plush backpack by $10. It features adjustable straps and has a zippered compartment tucked in the shell.