Line a baking sheet with parchment.
To a medium bowl, add the peanut butter, syrup, vanilla and salt, and stir to combine. Now, add the coconut flour, and stir, until no patches of dry flour remain.
Form the mixture into 8 triangles, adding them to the lined pan as you go, then transfer the pan to the freezer for 30 minutes or so, until solid.
To a shallow bowl, add the chocolate and coconut oil and melt in the microwave in 30 second increments, stirring in between, until mostly melted. Stir, until fully melted.
Using a fork or pie knife, add a triangle to the bowl of melted chocolate, and coat. Continue with the remaining triangles, returning them to the lined baking sheet as you go. Add the antler, eyes and noses.
Transfer the finished reindeer to the freezer and chill for at least 30 minutes. Let them soften for a few minutes at room temperature before eating.