Cymatics

The second edition of Jenny's 1967 seminal book on the topic is full of nature-induced mandalas

Generally the study of wave formations—specifically sound—Cymatics looks at the mesmerizing organic shapes created by invisible waves. Founded by Swiss doctor and scientist Hans Jenny who used simple sine waves to create patterns in powders, liquids and pastes, the book collects images developed over 14 years. The resulting mandalas reference art (like the work of Herwig Weiser, architecture, geometry and nature, among other disciplines. The …

Invisible Ink

Fulfilling many a childhood fantasy, Invisible Ink is for amateur spies and sleuths or just for those looking for a medium that's a little less permanent. Clear and invisible when applied to paper, the water-based ink turns blue when exposed to heat (like a light bulb) and disappears again when it cools. Packaged in an old-fashioned ink bottle, it also requires old-fashioned implements (a nib, …

Bambu Sporks

Improving on the classic cafeteria utensil, Bambu's new Sporks mimic the way people eat with their hands. Designed for easy spearing or scooping, the biodegradable "Veneerware" (Bambu's paper plate alternative) is perfect for picnicking, parties, camping or anyplace else a disposable spork would come in handy. Get a 24-piece pack from Joanne Hudson Basics or Greenfeet. Also check out the Bambu boutique (including the complete …