(Project Icarus) Taking pictures of Earth from near-space for under $150. How-to guide available.
(Scanimations) Like the book "Gallop," but click-and-drag DIY in an HTML5 canvas. Kits available.
(MoiréMe;) Spatial analog of FM radio. More mathematical than Scanimations. Kits available.
(Dual-Plane Computer-Generated Holograms) DIY multi-plane Fresnel CGH's. All code runs in your browser! Video Demo. Kits available soon.
(Holographic Glasses) Make your very own holographic glasses! All code written in javascript and runs in your browser. Full Scene. Kits available soon.
(Laser Wiretap) Low-budget laser wiretap. Use a laser beam to detect and listen to music behind a distant glass window. Coming soon.
(Lenslet Arrays) DIY Glassesless 3D display. Great for teaching/demonstrating how lenticular arrays work. Coming soon.
(GrIn Blocks) Bouncy lasers. Coming soon.
(Other) List of other projects on the to-do list. (Legoify, Displayblocks from Media Lab, Land's color experiment, LCD screen w/o polarizer, Craftwork)