The goal of the programme is to return children conscripted by Iran-backed Houthi militias to schools, playgrounds and normal childhood activities, organisers say.
Some of the children kidnapped or recruited and then brainwashed, drugged and sent to the frontlines are as young as 8 years old, officials say.
Families fleeing the conflict around the Red Sea port have fled to other areas, including Sanaa, where some have found shelter in schools.
Displaced Syrians risk losing claim to land they own under two new laws passed this year that allow the government to seize private property.
Egyptian officials in Damascus say they are taking all necessary measures to help Egyptian citizens trapped in Syria return safely to Egypt.
Banned anti-personnel mines planted by the Iran-backed militia have left 814 people permanently disabled, Yemen's human rights minister said.
Violations and corruption have been on the rise as the parties to the conflict focus on fighting rather than governance, Yemenis say.
Fashion and beauty shop owners in Sanaa have been ordered to cover up mannequins and remove advertisements bearing images of women.
The international coalition has sought to keep civilians out of harm's way during the battle to oust ISIS and to help them return to their homes.