Prep trays
Line 2 large baking sheets with parchment or silicone mats. Arrange pretzels in a single layer. Set toppings within reach.

Melt chocolates
In separate microwave-safe bowls, combine semisweet chips + 1 tbsp oil, and white chips + 1 tbsp oil. Microwave each in 20-second bursts, stirring between, until smooth. (Double boiler works too.) Add optional extracts now.

Dip
Using a fork, dip pretzels in melted chocolate, letting excess drip off. Place on prepared sheets. Alternate white and dark chocolate for variety; drizzle some instead of fully dipping for contrast.

Decorate
While chocolate is still wet, add M&M’s, peppermint, sprinkles, nuts, and a pinch of sea salt. For wreaths, arrange small circles of pretzels and drizzle green-tinted white chocolate, then add red “berries.” For reindeer, use a twist pretzel, candy eyes, and a red candy nose; attach antlers with a dab of chocolate.

Set
Chill trays 15–20 minutes until firm. Rest 5 minutes at room temperature. Optional: finish with a contrasting chocolate drizzle.