See if they can send you the serial #'s and make/models of the sewing machines so you can download operating manuals and take some specific parts likely to be needed- bobbins, belts, properly sized needles, etc. Lots of sewing machine oil (Not 3in1) and TriFlow. Spend some time on the Vintage and Antique section of the Board. There are great tutes on cleaning and repairs. If you have access to internet service in India you'll be able to reach some incredibly knowledgeable people here on the Board who can help you with specific repairs. Take a spool of leather for cutting into belts. Maybe a handcrank or two? The old machines are fairly indestructible unless severely rusted. Please keep us posted on what you need- I'm sure folks will be able to help you.