There are few joys left for 10-year-old Ahmed Hamdouna, whose childhood has already been scarred by years of war and displacement in Gaza.
Now, what little reprieve he found playing with scraps of plastic and sticks has also been torn away, as Israel warns it will step up military operations in the territory if kites continue to land on the Israeli side of the border.
"My father stopped me from flying my kites because of the occupation's threats," said Ahmed, who has been displaced to Deir el-Balah in the central Gaza Strip.
"I felt heartbroken after spending so much time collecting sticks and nylon, only for the occupation to prevent us from playing with them," he told AFP.
"We are just young children. They destroyed our home and our whole neighborhood -- what more do they want?"
Israel accuses Hamas of cynically using children and says the kites could pose a threat, years after a wave of incendiary kites and balloons sparked fires in Israeli farmland.
A series of kites have flown in recent days across the border into southern Israel, communities shaken by the Hamas-led attacks of October 7, 2023.
Hamas has denied responsibility. No explosives were detected, but at least one kite had a political message on it.
On Wednesday, an official of the US-led Board of Peace supervising the ceasefire plan in the territory said: "All militant activity in Gaza must stop, including the flying of kites."
"Israel, too, must comply with the ceasefire," a board official said.
Hamas spokesman Hazem Qassem said the popular committees in Gaza's displacement camps were trying to prevent children from flying kites, over fears they could be targeted by the Israeli military.
Ahmed said he was now scared of playing, but couldn't understand why the Israeli military was "afraid of kites when they are just paper and string".
"I don't want to hurt anyone. I just want to play like children everywhere else," he said.
- 'Sense of freedom' -
For Gaza's children, building kites was a simple way to find joy among the ruins of war.
"There are no toys here, no amusement parks, not even a football to play with. The kite is the only thing we can make with our own hands that makes us happy when we fly it in the sky," said 11-year-old Yamen al-Mubayyed, who has also been displaced to Deir el-Balah.
"My friends and I get together and make them using pieces of wood we collect from destroyed houses, along with paper and string. We glue them together using flour and water, then go to the sea to fly them," he told AFP.
Yamen said even the buzz of Israeli surveillance drones didn't put him off flying his kites.
"It is the only thing that makes us feel that we children are alive and gives us a sense of freedom," he said.
Israel has kept up attacks in Gaza, saying it is targeting gunmen, despite a US-backed ceasefire which came into effect in October.
Israeli army chief Lieutenant General Eyal Zamir on Tuesday vowed to push on with demilitarizing Gaza "using all necessary means".
- 'Kill the joy in their hearts' -
For parents in Gaza, the once-harmless activity now carries immense worries.
Akram Abu Shurkh, 30, said he had forbidden his children from making kites but felt he had "killed the joy in their eyes" in doing so.
"These are children who do not understand military calculations. They only see it as a game and a way to release their energy," he told AFP.
"But I see death in the touch of the string and the flying of the kite."
In southern Gaza, 34-year-old Umm Moaz Huwayla said her heart raced from worry every time her children went outside with their kites, but felt she couldn't stop them from playing.
"The occupation wants to kill the joy in their hearts," she told AFP.
"They are not asking for much, only to live their childhood, even with a piece of string and a sheet of paper."
