No wall is out of reach with these paint applicators - The Gadgeteer
BEHR 5 in. Tight Space Painter for Hard to Reach Places W000697 - The Home Depot
Creative Mark 30 Piece Micro Detail Paint Brush Set, Mini Paintbrushes for Acrylic, Watercolor, Oil, Face, Nail, Scale Model Painting & Line Drawing, Vegan Leather Case Included : Amazon.co.uk: Everything Else