For this whimsical piece, you’ll need 16 ornaments. First mount eye-hook hardware to the ceiling (or use a preexisting plant hook). Tie two three-foot-long ribbons to it, knotting a glass ball at each end. Then cut four more ribbons two inches shorter than the first; tie them to the eye-hook so they surround the center balls. Attach ornaments to the ends. Build the next tier (again, two inches shorter than the last) with four more ribbons to create an upside-down pyramid. Last, use Blu-Tack (a reusable adhesive) to secure each ball to the one next to it. After the holidays, store the arrangement in a large box stuffed with tissue paper.