Self-replicating Robots (video)
Google video of the self-replicating robots at Cornell – “One of the dreams of both science fiction writers and practical robot builders has been realized, at least on a simple level: Cornell University researchers have created a machine that can build copies of itself. Admittedly the machine is just a proof of concept — it performs no useful function except to self-replicate — but the basic principle could be extended to create robots that could replicate or at least repair themselves while working in space or in hazardous environments” Link.
Weber decided to start construction of his house by building a homemade solar water heater… “It took a lot of time and sifting, but I was finally able to devise a simple and inexpensive water warmer that I knew “us regular folks” would be able to build. In fact, my design involves only three steps: First, build a glass-covered wood “hot box” to catch the sun’s heat. Second, install a manifold of copper water pipes–inside this collector box–so the gathered warmth will heat water. Third, hook the outlets from the manifold to a storage tank (this container should be set above the heat collector) so the thermosiphon principle will move water from the collector to the tank.” Thanks Star! 
Surj writes “Today I presented the Tux-Phone idea at the O’Reilly Emerging Telephony Conference in SFO. An open cell phone platform named tux-phone. Three important disclaimers: It is not a novel idea. People have thought and written about similar equipment. We just started building it. The engineering process is fairly straightforward except for finding the right parts and putting them together while keeping it small.” 
Using some plastic and a toaster you can make your own PSP stand, JavaMoose writes “I decided to make a simple little stand for the PSP. Handy when watching videos, and it lets me have it connected to external speakers and the charger – while on the stand. It is very simple to make, and only cost me about 20 minutes and 25 cents worth of plastic.” [
Cool game on the Flickr blog…“I spent more time than I should have playing Fastr this morning, a game where you are shown a group of pictures from Flickr and have to guess the tag before other people do. It’s hella fun!! OK. Don’t everyone hit this all at once and beat up the server.” 
Via 
Sej writes – “My new digital camera came with more accessories than would fit in the included case. I built my own handy container for the rest of the gear. The body is a hard plastic VHS tape case. I used a “dollar store” dog collar and leash to make a closure strap and shoulder strap.”