I can't lucid dream anymore so here is how I get ideas these days. When I want to, see a painting or, hear a poem, I lay down on an Oakworks Prone Pillow, and block out all light and sound, by wearing Bose QC35 Noise Canceling Headphones, while making sure the face pillow is pressing against my brow. It has become very easy for me to see painting ideas, and hear quatrain lines this way. I wait for the first word of a line. Then I hear a line. For paintings I watch for faint visions which trigger whole visions. I accept any ideas from myself that seem to have come from somewhere other than me.