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I have purchased the materials you had mentioned along with anther with pollen (which is placed inside the flower) from Patel fancy store very close to Jayanagar 4 th block complex. You can ask any shop for guidance as he is very popular.He also stocks different types of beads etc.,
You could also try at Vinayaka shop close to Jayanagar 4th block bus stop, close to Jain temple.He stocks most sewing material.I have not tried the materials you have mentioned here though.