Kanaza said he's produced more than 5,000 of them, and another 6,000 plaques and key chains — all with the pictures of "martyrs."
The medallions are shipped to other parts of the Israeli-occupied West Bank, but the phenomenon is most evident in Balata and Nablus.
Kanaza's plastic medallions are the top end of the necklace craze and sell for 10 shekels a piece, about $3.30.
"Sometimes a child will say, `Don't you think that's too much,'" said Kanaza. "I say, `If you bring me half that much I will give it to you.' He comes back in a week with five shekels and he's very, very happy."
With Palestinian civilians or fighters killed on almost a daily basis, Kanaza's business is booming. Other merchants have jumped on the craze with a cheaper alternative to Kanaza's medallions. They mass-produce passport-size photos of the militants and slip them into transparent pendants. Those sell for just 65 cents.
At Balata, the craze is a by-product of a community that has seen some of the worst fighting in the uprising.
Since last February, the camp has been completely invaded three times by Israeli soldiers in search of militants and bomb-making workshops.
At the camps' school for boys, run by the United Nations' agency responsible for Palestinian refugees, bullet holes riddle the inside of some classrooms and parts of its façade.
The 1,700 students have missed half the school year because of Israeli-imposed curfews or invasions. Many of the students know a relative or friend killed in the uprising. Two of its students have been killed and six have brothers who died in the fighting.
It's the kind of environment that has forced teachers to grudgingly allow students to wear their "martyrs" necklaces in class. When a teacher recently insisted a student remove his necklace during gym class, the boy's father showed up the next day and "wanted to fight us," said the school's principal.
The principal, who asked not to be named, said teachers were forced into a similar compromise about posters commemorating fighters and suicide bombers, which used to fill classroom walls. The students agreed to take them down in exchange for posting them on classroom bulletin boards.
"We tried to convince the students that there's just not enough places to put up all the martyrs posters because it's a continuous phenomenon," he said. "The Israeli occupation thinks it can break this new generation by showing its power. They don't understand that the opposite is happening. They're breeding hatred."
Jabal said the children have lost all fear of Israeli soldiers and already go through dangerous lengths to imitate their militant models.
Recently, Jabal's 15 year-old son was shot in the leg by soldiers after setting fire to an unoccupied tank.
"I opened my son's closet and found it full of martyrs posters and necklaces. I said to him there's nothing wrong with being nationalistic and defending your rights, but you're just too young," Jabal said. "I said, `Ultimately, you'll be rewarded with your picture hanging from a necklace, and we will have lost a son