There is increasing interest and recognition that the arts and humanities can promote positive human flourishing effects. These include dimensions such as subjective and psychological well-being, creativity, empathy, perspective-taking, critical thinking, and civic engagement. In this presentation, I will present emerging work that integrates and validates extant and newly developed assessments into a common Assessment Toolkit. The goal is to enable researchers, organizations, schools, and the general public to learn about, assess, and track flourishing effects of the arts and humanities. We begin with a systematic review of the literature on extant scales and consider the recurrent themes in how the arts and humanities can promote flourishing. Multiple samples are used to calibrate and validate the scales to ensure generalizability. A summary of the findings will be shared and future directions to integrate experience sampling and data science approaches will be considered.