Drywall texture tool - uhhh, this is what I needed after the kid took it out on his wall...:

Template Drywall Repair Tool - Hand Tools, Drywall, Finishes And Surfaces, Concrete Materials And Admixtures - Remodeling Magazine

Rosebud Drywall Texture in my old bedroom

Rosebud drywall texture is common on ceilings throughout the midwest U. Rosebud texture is easily applied using a paint roller or an airless paint sprayer.