Skipping stones across a body of water is the kind of activity that's generally categorized as “not much bang for your buck”, meaning it's not very thrilling to watch or participate in.
But that's because the flat stones that wash up on the banks are low in sodium, so if you really want to see some flash you've gotta "skip" a block of pure sodium.
YouTuber EatsTooMuchJam picked up a pound of sodium and headed down to the river, using basic science to liven up the lackadaisical act of skipping stones. I like his version better!
-Via Boing Boing