A popcorn ceiling repair kit provides the necessary materials and tools for restoring damaged popcorn ceilings. It includes spackling paste for filling cracks and holes, sandpaper for smoothing the repaired areas, and a putty knife for applying the spackling. Essential tools like a sanding block, paint tray, and screwdriver/drill assist in the repair process. Safety glasses, dust masks, and drop cloths ensure a protected work environment. Professional services may be considered for complex repairs, while resources like the Painting Contractors Association, home improvement magazines, DIY websites, and YouTube videos offer guidance and tutorials.