You can have a look at www.dekorcompany.com they have a wide range of home decor products and ship all over India too.
I am a member of this whatsapp group where they share a wide variety of home decor products. They can be used for personal use as well as for gifting. You can contact them on this number 9958071919. They’ll add you to the group.
You could try Rain and Peacock in Shahpur Jay, Address Home in GK I
You can check out The Decor Kart, AGI Homedecor and 55 Luxe.
The Wishing Chair in Shahpur Jat, Good Earth in Khan Market, Crazy Daisy in Meharchand Market or you could even check out the Amar Colony Furniture Market for some cool collectibles.