What kind of dominoes does flippycat use in the videos?

Flippycat uses dominoes that are meant to be stacked, as you see. these dominoes are usually plastic or wooden, not the ones used to play the game. you can get these dominoes off of Amazon or ebay. but, in some areas, they can be hard to find, or very expensive for little dominoes. domino rally has those type of dominoes, but is mostely overpriced. hope that helped a little bit.