If you are looking for original and regional souvenirs from Warsaw, it is worth to try and have a look not only in typical souvenir shops, which offer mugs, bags and pens with the city's logo, but also in shops that have typically Polish products.
Nearby the Royal Castle and the Palace of the Culture and Science, you can find a shop called Cepelia. It offers souvenirs and products inspired by regional art. We recommend you to have a look at the especially and typically Polish handmade and hand painted ceramic products from Bolesławiec and souvenirs made from felt with embroidered ornaments and patterns inspired by Polish folklore. Also, in many shops around the city, you will find amber jewellery, made from a stone the Baltic coast is famous for.