Start a Online Tshirt business. It is one of the best thing to get a quick profit.
You can buy Quality tshirts from Tirupur,India in bulk for cheap rates like 80₹-100₹ each. I suggest you to buy 180 GSM cotton tshirts.
Surprised?
You may have bought the same Tshirt on Myntra,flipkart for 599,699,....
So for 50k rupees you can buy 500 tshirts.
Then get them in various designs and colours in various quantities.
Get a VAT certificate for selling the tshirts in India. It costs you 5000₹. Any local chartered accountant can give you that.
After that , you can register on Amazon,Myntra,flipkart as a seller and you can sell the tshirts for your own price rates.
The advantage is these companies take care of the shipping(they will charge you a few bucks) an you can sell them to whole India.
Go and try it. I am sure you will be happy after that.
All the best.
Hope this is helpful.