You can rent all sort of adventure gear from Karlo Rent starting from a rain poncho to headlamps to other things like camping lights, indoor tent lights, tents, GoPros and even shoes. They will also have the stuff delivered and picked up on additional payment.
Shell Out: INR 75 per day onward
P.S: Payment of up to INR 20,000 can be made in cash but an online mode of payment is available too.