Sooner or later, every sprayed ceiling is going to get a water stain or a scrape. Spray texture in a can won’t perfectly match every ceiling texture, but it’s usually close, and a lot easier than respraying a whole ceiling. Before spraying, seal the patch with a stain-blocking primer, cover the floor and furniture, and practice your technique on scrap plywood or cardboard. Buy ceiling texture on Amazon now.
How to DIY it: This job can be messy, so protect nearby surfaces by covering them with plastic or cardboard. Spray the springs with garage door lubricant (about $7 at home centers). Don’t use oil, grease, or other lubricants. They may be cheaper, or you may have them on hand already, but they won’t work as well and tend to pick up dust and grit—just what you don’t want on moving parts.