This is a kolam stool with a painting on its top done in the Thanjavur style.

Thanjavur (Tanjore) is an ancient city built in the fertile delta of the Cauvery river in Tamil Nadu, around 350 kilometres from Chennai (Madras). It is here that this style of painting was developed during the rule of the Marathas during the 17^th & 19^th centuries. Raja Sarabhoji (Serfoji II), who belonged to the Bhonsle clan of Marathas and descended from Chhatrapati Shivaji’s half brother Venkoji, played a crucial role in nurturing this art form. 

The easiest way to differentiate between Thanjavur & Mysore paintings is that the former uses a lot of gemstones and gold leaf, whereas the latter has more intricate details and doesn’t have any gemstones.