 The first task he sets about to do is to go to the shop to buy some saffron.Since people can't see him because he's so small, he avoids being trodden on by singing,

(Patim patam patum/ Men and women who come towards me/ Patim patam patum/ Don't tread on Patufet).The people he meets only see a coin that walks and sings but he manages to accomplish his task.