http://thinkstartups.com/ covers weekend projects, hackdays, and other "hacker culture" such things. It is not updated daily, more like weekly, but still good to have in an rss reader somewhere.
I'm thinking more like the "Show HN: Please Rate My Startup/Web App..." type of posts that reveal tech products, or a local business that just opened, or a new, tangible product that just launched (and is ready to be purchased and shipped).