Line a baking pan with parchment paper or a Silpat.
Crumble the pretzels and coconut cookies onto the parchment. Because of all of the sweet items in this bark, be sure to use more pretzels than cookies. The balance of salty pretzels makes a needed contrast for the bark.
Sprinkle the macadamias over the pretzels and cookies. Set aside.
Melt the white almond bark according to package directions. I melted mine in the microwave in a microwave safe bowl. Don’t over-cook the coating, because it will burn. The idea is to get the coating pourable.
Pour liquified coating over the pretzels, cookies, and macadamias. Smooth, if necessary, with the back of a spoon or a spatula.
Immediately sprinkle with M&M’s, sprinkles, and Pop Rocks, if using. Note: If you live in a humid climate, the Pop Rocks may not hold up well in the humidity. They could lose their pop and crackle. I live in a very dry climate, so there was no problem.
Allow to cool at room temperature until solidified, or put the pan in the refrigerator to speed up the process.
Break apart into small serving pieces.