The best day to keep idols of lakshmi jee and ganesh jee according to Vastu Shashtra on Guru Pushya Yoga. The second option is Ravi Pushya Yoga. Pushya is king of star( Nakshtra) ,if it comes on thrusday than it is Guru Pushya Yoga. If it fall on sunday than it is called Ravi pushya yoga .The guru pushya yoga will come on 07/12/2017. The other guru pushya yoga is on 09.11/2017 after 7:31 pm. The ravi pushya yoga is 23/07/2017 after 10:49 am. The second ravi pushya yoga is 20/08/2017. You should choice the above written yoga and keep the idols in your home temple.