Good quality rucksack (preferably 40-60 liters) & a small day bag pack (for hikes/treks purpose) with rain-cover is recommended, easy to carry trolley bag.
A pair of shoes (mainly trekking/sports) with good grip & waterproof, atleast 2 pairs of socks & floaters/sandals/slippers.
Heavy down jacket, light fleece, long track/cargo pants, long/short sleeves T-shirts, body thermal wears (as per season), sun cap/hat, woolen cap & gloves (as per season), hoodie, raincoats/ponchos.
Personal care items like cold cream & moisturiser, sunscreen (preferably SPF40), lip balm, sanitary pads, toothpaste & other toiletries, wet wipes, hand sanitizer, insect repellent, body spray.
Personal medication (as prescribed by the doctor) & first-aid, sprain relief spray, glucose powder, tablets for headache, fever, diarrhea, motion sickness, dettol & cotton/bandages.
Personal documents & ID's like aadhar card, drivers license, passport or any other valid Government ID proofs.
Sunglasses, charger, power bank, quick dry towel, adequate amount of cash, quick snacks/dry fruits/energy bars, trash & waterproof laundry bags, re-usable water bottle.