That Kimiai film made me think about kites. The colors and materials and geometries of kite-flying are so beautiful. Try doing a google image search for 'tetrahedral kite'. Kite fan culture of the 70s almost mirrors the underground environmental art and inflatables of Ant Farm or whoever. Here are some images from KiteLines magazine from the late 70s. You can find PDFs of every single issue of this magazine here. Start with the earliest issue and travel forward in time - totally amazing.