Freesound is a database of 120,000 sounds, not songs. The sounds can include anything from a pipe banging against the wall to water dripping. Many of the sounds have been used in movies and in ccMixter remixes. Keywords and “sounds-like” type of browsing are available for searching. From the site, “Freesound is a collaborative database of Creative Commons Licensed sounds. Browse, download and share sounds.”
Energy savers is a website from the U.S. Department of Energy. It provides energy saving information for remodeling, appliances, electronics, electricity, lighting, heating and cooling, and many other subjects. The website shows how you can get an energy assessment of your own home. There is also a place to get rebates for Energy Star appliances. Other resources include how to calculate your energy costs and a product library that can be perused.