The Peddler in the story "Rattrap" by Selma Lagerlöf gets the material to make rattraps from stores.

Explanation:
The Peddler in the story is a poor and itinerant man who travels from place to place, selling small trinkets and rattraps made out of used iron. He does not have a fixed place to live or work, so he relies on finding materials wherever he can.

In the story, the Peddler comes across several old iron rattraps hanging on the walls of an abandoned ironworks. He sees potential in these discarded items and decides to use them as raw materials for making his own rattraps. He takes down the old rattraps and carries them with him to use as a base for his own creations.

The Peddler is resourceful and uses whatever materials he can find to make his rattraps. Since he does not have the means to buy new materials from shops, he relies on scavenging and repurposing items that others have discarded. In this case, the old rattraps from the abandoned ironworks serve as the source of material for his own rattraps.

The story highlights the Peddler's ability to find value in what others consider worthless. By using the old rattraps, he demonstrates his creativity and ingenuity in making something useful out of seemingly useless materials. The rattraps he creates are then sold to unsuspecting customers, who are unaware of their true origins.

Overall, the Peddler gets the material to make rattraps from stores, specifically from the old rattraps he finds in the abandoned ironworks.