It’s hard to be nimble when you have 150,000 people in tow, but the Cherry Creek Arts Festival has maneuvered with considerable grace over the past three years as the coronavirus pandemic upended its usual operations. The fest did what it had to in 2020, canceling its annual mega-show and sale of artist wares and channeling its energies into more cautious activities, like putting together at-home, art-making kits and distributing them for free to school-age kids around the region.