Often used in meditation, mandalas are created by first drawing a large circle on a blank sheet of paper, then filling it with whatever random images come to mind.
它常被用來當作協助冥想的工具，在一張白紙上畫上一個大圓，圓之內則由畫者任意塗鴉上腦中浮現的圖像，原理跟自由書寫一樣。