I carved this out of some scrap some years ago on the company mill:Each of the small cubes is 0.750 +0 -0.005. :-)
It's been sitting on my desk for years - yesterday one of the new guys in the shop came into my office and expressed some interest in it. I casually said, "I'm thinking of seeing if I could get anything for it on Ebay."
The guy offered me $20.00, and being out of money until payday, I immediately said, "SOLD!" so I ate that evening. ;-)
Nothing earth-shattering, but I thought some might be interested to see it; most importantly, having posted some metal content that I've done with my own hands (on the shop's end mill), I now feel less like some kind of intruder. ;-)