I occasionally search for "reclaimed" wood and materials for inspiration for our upcoming projects, and have noticed listings on craigslist and kijiji for reclaimed wood from bowling alleys. I would love to use planks of bowling alley wood for the sliding doors in our basement, but 3" thick slabs of pine/maple would make for VERY heavy doors. So ... I dream.
Source: inhabitat
Source: Retro Renovation
Source: Design Crave
Source: counterevolution