Prepare the apples: Wash and dry the apples. Cut each apple into 8 to 10 wedges, removing cores and seeds.
Make lemon water: In a large bowl, stir together lemon juice and cold water.
Prevent browning: Add apple slices to the lemon water and soak for about 2 minutes. Drain the apple slices and pat them dry thoroughly with paper towels.
Fill the cups: Add 4 to 5 apple wedges to each clear plastic cup.
Add caramel: Spoon about 1½ tablespoons caramel dip into each cup, or place the caramel in a small condiment cup inside the larger apple cup.
Add sticks: Place one wooden craft stick, lollipop stick, or small fork into each cup.
Decorate: Drizzle with melted chocolate and add optional toppings, or serve toppings separately for a DIY caramel apple cup bar.
Chill and serve: Cover the cups and refrigerate until ready to serve. Serve the same day for the freshest apple slices.