Into a large mixing bowl, add the softened cream cheese, lemon zest, granulated sugar, and vanilla extract, and mix with an electric hand mixer until creamy and smooth.
Crush the digestive biscuits. The best way to crush them is in a food processor or in a blender. If you don't have a food processor or a blender, place them in a ziplock bag and smash them with a cup until fine crumbs form.
Add the crumbs to the cream cheese mixture and mix well.
Cover the bowl with plastic wrap and chill in the fridge for at least 30 minutes. This way it will be easier to roll the balls.
Use a small cookie scoop to scoop out the balls (or about 1 tbsp). Roll them into balls using your hands and place them onto a parchment paper-lined baking sheet.
Freeze the balls for about 20 minutes so they will not crumble when you coat them with toppings.
Dip the balls in your favorite toppings. We used sprinkles, coconut flakes, melted chocolate, and nuts.
Carefully place each ball onto a parchment paper-lined baking sheet.
Place the balls in the fridge to firm up for about 30 minutes, serve, and enjoy!