Check out Dungeon Run Adventures for some quick GMless adventures that are great for groups with kids! Each dungeon has it’s own unique spin, and everyone gets to play, color, and explore!
Color My Quest is a TTRPG designed for kids that focuses on coloring! My kid and I had great time coloring characters, baddies, and the map as we progressed through the fun pre-made story that came with this!
Skyrealms is a combo TTRPG and coloring adventure! Great for kids or grown ups, Skyrealms comes with a setting, creatures, plot lines, coloring activities, and more, all to be used with any TTRPG system!