Tomorrow is Independence day – Yom Ha’atzmaut in Israel. My suggestion for a great family picnic spot is Ramat haNadiv National Park.
After the picnic you could visit the Herodian/Byzantine farm (Mansur el-Aqab) which I reconstructed many years ago.
Another interesting sit is Horvat-Eleq – an Herodian Fortress with adjacent water features, a columbarium and bathhouse.
Hag sameach – happy holidays!