Having fun while experimenting - do not use these in production code.
goto/goto.h: A global goto example (x86 only), similar to std::longjmp. This one deliberately ignores execution context and stack frames - hilarity ensues. Check out goto.cpp for an example.
private: Read/write of private member variables outside of a class, using memory access. Works with classes without a vftable (virtual functions) and proper boundary alignment.
nixie: Off-line, AC-synchronized nixie clock with an Arduino Mega2560 and optional DCF module. Check out my website for more details.