First of all get your ECU software version upgraded from authorised dealer ( older will be C version and replace it with Q version) this will increase the pick n performance on CNG n Petrol. It should not cost you anything.
You can buy used Power Steering for almost Rs, 15,000/- and get it installed in your car.
You can also add New Fog Lamps ( original) and get installed for Rs. 5,000/
New front showgrills chrome plated for Rs. 4,000/
New Power windows ( approx. Rs 12,500/per window)
So take a decison and proceed.