Mathematical subjects, including fractals and interactive work

• Millefiori iteratively generated vaguely-floral patterns; quite fun.
• Melissa Binde fractals.
  Thumbnails are smaller in her first category, but there are more of them; I prefer her second category anyway.
• UMn's Gallery of Interactive Geometry which is pretty fun and not too sluggish: in QuasiTiler, a new image takes perhaps 15-20 sec; in Kali, more like 10.
• Nijmegen Math Art Gallery mathematically fine, but artistically not wonderful
• The CRS4 Animation gallery. I haven't explored this, but it looks fun.