Here is a classic example of Lilliput Illusio. It can be very easily achieved by 3 of your friends on a beach. The sand ads a nice uniform background which will compliment the illusion and make it feel more real.
But make sure its perfectly executed make sure the other persons feet fully occupy the hand area of the person showing their hands else the illusions effect will be very less.
But make sure its perfectly executed make sure the other persons feet fully occupy the hand area of the person showing their hands else the illusions effect will be very less.