Peekaboo is a short beautiful slot canyon near Kanab (not to be confused with the Peekaboo Slot Canyon in Escalante). This canyon does require an off-road vehicle to get to the trailhead, but Peekaboo is an easy 1-mile hike once you get there. For anyone without an off-road vehicle, consider renting an ATV/UTV from Kanab, or hire a guide, like All Ways Adventure to take your family out there.
Finding Moqui Caverns (Kanab Sand Caves)
Hiking up to the Moqui Caverns (Kanab Sand Caves) along US-89 requires a relatively short walk but a steep scramble up a sandstone cliff. These caverns are manmade from the 1930s and are remnants of a sand mining cave. The caverns are covered in graffiti, but still offer beautiful photos when the sunlight enters towards the late afternoon / early evening hours.
Exploring Coral Pink Sand Dunes State Park - Utah
Coral Pink Sand Dunes State Park is a unique place to explore nearby Zion National Park with minimal crowds despite its beauty. Explore the sand dunes by foot, rent sand boards to sled down them, or schedule a UTV tour to drive over them. This is an awesome park to spend 1-2 hours at with young children.(in a non-summer month).