"The Calm Mindful Nature Scene 300-Piece Puzzles ($13) [are] great for teens and tweens," said Marissa. "Spin Master partnered with the popular app, Calm, to help kids practice mindfulness with this puzzle. It's a great hands-on, tactile experience when you just need a little break from all the stress of the world! Kids can even puzzle while listening to relaxing meditation audio in the Calm app." Feel free to check out Walmart or Amazon's websites for more design options!