- Archives of The Amateur Scientist (from Scientific American), brought to you by Bill Beaty
- LiquidMac
- Cat Herder game.
- The Tetris Wiki has a surprising amount of interesting content.
- Klein bottle!
- Otterpops vs. Fla-Vor-Ice… in which a shocking secret is reveal’d!
- We love these Science Shirts
- Electric Field Toy
- Malevoz Rolling ball clock
- The Wurst rug
- Matrix multiplication really is beautiful.
- Godzilla makes fractal cookies.
- Many Different Dice
- Another dicebag
- Paper Rulers to print out and enjoy. (See also: note about numberless rulers.)
- “Who *doesn’t* need a jar of eyeballs?!”
- CNC PBJ!