We've had little luck with getting Mango to play with many toys. He tends to just want to sit on our shoulder or a chair nearby and just hang out. However, Calie recently bought Mango a plastic ball that has piqued his interest pretty thoroughly. I refer to it as the 'Birdy Kong' due to its similarity to the red rubber kong toys you can give dogs. We fill the ball with extra confetti paper and wrap a few pieces of nuts in parchment paper. They sort of look like wrapped candies. Mango then pushes this ball around on the ground pulling out paper trying to get to the nuts. Disclaimer: we definitely presented him nuts in wrapped paper for a few weeks before hand, so now he expects all paper-wrapped things to contain food.
Anyway, here are some pictures of him having at it.