Many children love to draw. Yours may well draw just about chronically, with or without you. But that doesn’t mean it can’t be a family project.
You can have free drawing, where everyone draws as they please, or set up a theme, such as scenes from a recent family vacation.
Kids are often fascinated by how differently adults draw from how they do it. You may think that your artistic skills are nothing much, but your children probably won’t care!