Mix peanut butter, powdered sugar, butter, vanilla, and salt until a smooth dough forms.
Roll into 1-inch balls and place on a parchment-lined baking sheet.
Freeze for 20 minutes until firm.
Melt chocolate chips with coconut oil in a microwave-safe bowl in 30-second intervals, stirring until smooth.
Dip each frozen peanut butter ball in melted chocolate using a fork, letting excess drip off.
Place back on parchment and immediately top with a pinch of flaky salt or sprinkles.
Refrigerate until chocolate sets, about 15 minutes.