Line a sheet pan with parchment. Cut 8–12 pieces of twine, each about 6–8 inches long. Arrange pretzel sticks and decorations within reach. You're about to be a one-person assembly line.
In a large bowl, combine oats, protein powder, cinnamon, salt, and your green coloring of choice (start with 2 teaspoons matcha or a few drops food coloring). Stir until the color looks evenly dispersed.
In a microwave-safe bowl, warm the nut butter, maple syrup, and coconut oil for 15–20 seconds until loose. Stir in vanilla.
Pour wet into dry. Mix with a sturdy spatula or your hands until a thick, play-dough-like mixture forms. If it's crumbly, add 1–2 teaspoons water. If it's sticky, add 1–2 tablespoons oats or protein powder.
Fold in mini chocolate chips for extra joy. Not mandatory, but you're fun, right?
Scoop 2 tablespoons of dough and roll into a ball. Pinch one end and shape into a cone or triangle. Press the base flat so it stands. Repeat to make 8–12 trees.
Gently insert a mini pretzel stick into the base of each tree as a trunk. If you plan to hang them, skip the pretzel on those and use twine instead.
Roll the base edges in shredded coconut for a snowy drift. Dot the trees with dried fruit bits or sprinkles as ornaments. Cap with a star—use a star sprinkle or a tiny mango star cut with kitchen scissors.
For hangable bites, cut a small slit in the top with a paring knife. Fold a piece of twine into a loop, knot the ends, and carefully press the knot into the slit. Pinch dough around it to secure. Chill to set the loop firmly.
Transfer the sheet pan to the fridge for 30–45 minutes or the freezer for 15 minutes until firm.
If hanging, choose cooler indoor spots away from heat vents. Otherwise, pile on a platter and watch your guests “just try one” three times.