This is extremely cool. Within about 10 seconds in a lit room without white noise playing I began getting fairly vivid visuals. I'll be sure to come back to this to get the full experience later, and complete the questionnaire.

For reference I tend to get interesting/vivid visuals whenever I close my eyes for a few seconds, often when I look at a finely patterned/textured surface, and sometimes when I look at basically anything when I've gone >36 hours without sleep. The visuals from this are more intense than those I get from simply closing my eyes though, and more interesting/changing than those from looking at tiled floors or popcorn ceiling.