I know that most of my ideas have been duds, but here's a good one.
Are you seeking fortune and riches? Want to become a Pirate or a Treasure Hunter? How about making it so that there is a small chance that a single chest packed with gold ingots, bones, swords, and/or iron ingots appears on the beach? Possibly, one in a few dozen chests can contain a map or a compass. To make it slightly more fun, add an "X" made of red wool. The depth at which the treasure can be found be random from just under the surface to ten blocks down, within a 6x6 block grid.
Are you seeking fortune and riches? Want to become a Pirate or a Treasure Hunter? How about making it so that there is a small chance that a single chest packed with gold ingots, bones, swords, and/or iron ingots appears on the beach? Possibly, one in a few dozen chests can contain a map or a compass. To make it slightly more fun, add an "X" made of red wool. The depth at which the treasure can be found be random from just under the surface to ten blocks down, within a 6x6 block grid.