In a small saucepan, add butter and sugar. Heat over medium heat, stirring frequently until boiling. Continue to stir and boil for 3 minutes or until all the sugar is melted and it's no longer gritty. Stir in vanilla and remove from heat.

Immediately pour over crackers, spreading evenly with the back of a spoon. Bake for 5 minutes. Top will be bubbly. Remove from oven and let set while you melt the candy melts.

Melt red candy melts according to package directions and evenly spread on top of crackers. Sprinkle with candy Sixlets and sprinkles.

Add white and pink wafers to their own sealable sandwich bags, but do not seal. Microwave for 30 seconds on 50% power. Knead until smooth. If necessary, return to microwave, in 10 second intervals on 50% power until melted. Seal and snip the tip of the bag and drizzle on crackers.

Let set to harden, or refrigerate to harden. Break apart or use a knife to cut along the cracker seams. Store in an airtight container.