Besides Liquitex heavy body acrylics and Sugar spraypaints and stencils...and, of course, stretched canvases...my absolute favorite painting tools are this acrylic handled flat paintbrush, my flexible metal palette knife that I've been using since college, and this brayer which has been with me forever. None of these is expensive and all of them are typically used in every painting I create. They're all great for adding quite a bit of paint at one time and make great marks. The palette knife is also great for mixing colour and for scraping paint back - both of my palette and off my canvas. These are also the tools that I pack in my small pochade boxes when I paint en plein air.
AIRdirondack Art Project