I'm sure I once saw some ceiling panels with a similar pattern,
but I might have just seen some similar patterns and thought they'd make good ceiling panels.
(
Moon Girl Technologies horrendous beanbag,
Fri 24 Jul 2009, 18:02,
archived)
Perhaps the back of your eyelids . . . ?
(
Valin I changed glasses while I wasn't looking,
Fri 24 Jul 2009, 18:06,
archived)