What kind of LEGO can I find at garage sales / flea markets / car boot sales / jumble sales / thrift stores / charity stores?
Used / secondhand LEGO. It takes a fair bit of searching to find it, since it is usually snapped up early, but if you can find it this is the cheapest way. Condition of what you get varies from almost new to chewed and scratched and sticky! Lots may contain partial models or bits and pieces from many sets with none complete, along with non-LEGO items and clone bricks.