OK Jee thanks for the invitation. Unfortunately I am too far from your place. Have a lot of fun. From my experience, upside down bowl works as a 'diyo' but it should be very small and it is made up of steel, so a great care should be taken while pouring semi-solid powder and changing the side of the roti. John dude, we have nothing to do with tihar except forgetting it as there is no tihar.