DO IT YOURSELF ENTRYPURPOSE: To enlarge the handle of a hair brush for use by individuals with arthritis or grasping, fine motor, or upper extremity disabilities. The handle of a hair brush can be enlarged and equipped with a softer surface using hot-water-pipe insulation. To do so, cut a length of insulation to the size of the brush handle, being certain to choose insulation with an inner diameter that securely holds the handle. Insert the brush handle in the insulation and wrap tightly with plastic tape. AUTHOR: Greenstein, D. TITLE: Built-up Handles for Hairbrush and Toothbrush. BOOK: Easy Things to Make to Make Things Easy: Simple Do-It-Yourself Home Modifications for Older People & Others with Physical Limitations. REF: Cambridge, Massachusetts: Brookline Books: p 9. PAGES (including cover) 2. 1997.