Interesting and useful linksVarious Dark roasted blend:Weird and wonderful things. Nasa balloon car contest Theremins:many schematics here
Automata and other kinetic art Gina Kamentsky Mechanical Confections Keith Newstead automata Artur Ganson Kinetic sculpture Automata:How to design automata and mechanical toys. Tom Haney automata
Pop-pop boats and other ship related links Make a putt putt boat intro
Science of the vintage variety Electrostatic machines
DIY projects Science toys you can make with your kids