Hey Satyajit, Depending on your current location you may choose following options : 1)Delhi -Jaipur, Auli, Rishikesh, Mussourie, Parvati valley,Kullu-Manali, Kedarkantha trek 2)Mumbai -Goa, Wayanand, Allepay, Banglore, Coorg, Munnar, Kumarakom 3)Calcutta — Gangtok, Darjeeling,North Sikkim, Shillong Acc. to my experience i would suggest choose between these three : 1)Jaiselmar
3)Rann of Kutch Hope this would help you.
Himachal Pradesh is best place to travel during the winters if you're fond of snow. Also Rajasthan is also a good choice with many places to choose from like Udaipur, Jaipur, Jodhpur, Jaisalmer, Mount Abu etc.