maru_mari brought me back a solid copper ball from Albuquerque last night. It's a bit more than an inch in diameter and maybe 6 oz., much denser than any object I have handled for a while (other than my ring, which is almost twice as dense but much smaller). It's really fun to roll around in my hand and I've been playing with it idly all day when I'm not typing, which is probably a good way to prevent repetitive stress injury.
Earlier, the dog wanted me to throw it for her, but I decided against it. Dog dentists are expensive.