Take a tray and place a foil sheet on it.
Place 4 chocolate chip cookies on this tray with a foil sheet. Place them far from each other with equal distance.
Now, take ice-cream spatula and make one clean scoop of ice-cream from the tub. You can take help from your elder in taking out the scoop. Place this scoop on the cookie.
Take a spoon and settle the ice-cream on that cookie, making it even. Now put another cookie above it and your sandwich is ready.
Repeat step #3 and step #4 with other cookies as well and you will have your ice-cream sandwiches.
Now take a plate and put chocolate chips on it. Now take your ice-cream sandwiches and roll over it so the chocolate chips cover the ice-cream part. Your ice-cream sandwiches are ready.
Optional: You can use sprinkles, chocolate syrups, caramel syrups, and other edible confetti to make it fancier.