This Joker is made from junk and other odd things. It can be pivoted on the finger or on a bottle top. Its long heavy arms lower its center of gravity. On giving it a push the Joker rocks and rolls but doesn't fall. On giving it a twist it will keep dancing in circles for a while. www.arvindguptatoys.com/toys/balancingtoy.html This work was supported by IUCAA and Tata Trust. This film was made by Ashok Rupner TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org