Try%20your%20hand%20at%20a%20pop%20up%20paint%20sesh%20on%20your%20next%20adventure.%20We’ve%20included%20all%20the%20materials%20you%20need%20to%20create%20a%20mini%20masterpiece%2C%20all%20you%20need%20is%20a%20little%20inspiration.Set%20includes%2012%20watercolor%20paints%2C%20medium%20round%20refillable%20watercolor%20brush%2C%20drawing%20marker%2C%20pencil%2C%20color%20sampler%2C%20sponge%2C%20mixing%20pallets%20and%20paper%20pad.