When it comes to kid inventions, there’s a fine line between brilliant and cray. From a piggyback-ride-helper to gaming sneakers, here’s the stuff that caught our eyes. Whether they’re of any use to your family—well, we’ll let you be the judge.

Neat Knees

Think about it—we protect baby’s feet with socks and shoes, while often overlooking the fact that crawlers spend just as much time on their knees. These knee pads promise protection from rug burns and scrapes, plus they’re so darn cute! Caveat: We can't promise that, just like socks, these knee pads won't be removed after 7.5 seconds of wear.

Available at amazon.com, $14.95.

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Do you own an interesting kid invention? Tell us about it in the comments section below. 

—Ayren Jackson-Cannady