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.