In a bowl, mix graham cracker crumbs, melted butter, and sugar until combined. Press into the base of mini muffin cups or silicone molds. Chill while preparing filling.
In a separate bowl, beat cream cheese until smooth. Add powdered sugar, vanilla extract, and sour cream. Mix until creamy. Add food coloring if using.
Gently fold in torn cotton candy and gummy candies. Spoon mixture over crusts and smooth tops.
Chill cheesecakes for at least 2 hours. Garnish with whipped cream or extra gummy candies before serving.
Notes
For best results, use soft gummies and top with cotton candy right before serving to avoid melting.