Add heavy cream, cream of tartar, and vanilla sugar to a bowl and beat until stiff, using a stand mixer or hand mixer. Transfer whipped cream to a piping bag and let rest in the fridge. Wash and hull strawberries. Add strawberries, banana, some oft he vanilla ice cream, and milk to a blender and stir until combined.
Pour mixture into a mason jar and crumble chocolate cookie on top. Add remaining vanilla ice cream. Spread chocolate-hazelnut spread around the rim of the glass and press m&ms onto it. Place in freezer for approx. 5 min.
Skewer strawberries and mini doughnut each with a chocolate stick. Place doughnut on top of the freak shake and pipe whipped cream on it. Garnish with strawberries and mini doughnut on chocolate sticks, mini mallomars, and loppipops. Sprinkle chocolate chips and gummy bears on top. Enjoy!