Things you need: colourful cotton or satin embroidery threads. These are commonly available in all markets. Take three sets of coloured thread. I chose red, blue and green. Each set of thread should be two mm thick and seven or eight inches long. After all, you should be able to tie it around your friend’s wrist.
Now tie a knot at one end, leaving two cm of the thread open. Then plait the three sets of thread like girls plait their hair. Knot the other end as well. But see that you leave two cm of the thread open at that end as well. Your friendship band is ready. Keep it on your friend’s wrist and tie it at the ends. Your friendship is sealed with that knot.