If you want to avoid the little cups of water that are needed for blending the watercolors, then you may love some of the items we feature in this buying guide. There are several kits that have water brushes included. These are not like regular paintbrushes because they have a hollow core much like a ballpoint pen but only larger. This hollow-core holds water for you to use instead of water that is loose in a cup. The tip has the brush bristles for painting. When you want water in the paint, just squeeze the barrel of the brush a bit to release some drops from the brush into the paint. These incredible brushes help you eliminate the cups of water and make watercolor painting something that can be enjoyed while traveling and on the go. The sets are in compact tins and containers as well to be very portable for the traveler.