Luggage and bags:
Good quality of strolleys as roads are not very good. Sunglasses in summers and overcoat in winters
Clothing/Shoes/Weather Gear: Sleeveless tops and shorts, sleepers in summers (from april to october) and sweaters,jackets, warm socks and comfortable shoes in winters(december to february), november and march are very pleasant. In august and september, one should carry umbrella and waterproof footwear,
Toiletries and Medical Supplies: Everything is available at reasonable prices but sunscreen,facewash and shampoo according to ur skin. Medical stores are plenty.
Photo Equipment: Good camera. Some historic places r there.
Camping/Beach/Outdoor Gear: Only in march and november. Rest months are either too hot or too cold . No beach. Amusement parks and malls are plenty.
Miscellaneous: Many markets are there. , connaught place, south ex, greater kailash markets r good markets but expensive. You can bargain on roadside shops. You can buy many things like kashmiri shawls, south silk sarees,hand made potteries,wall hangings.