When cartography enthusiast Cameron Bennett went into quarantine in March, he needed something to keep him busy. His solution was to build an accurate topographical map of Idaho using accurate data and cartographic software. To acquire the necessary blocks, Bennett used LEGO's precise purchasing system:
If you run out of pieces in one or more colors (as I did) and are too stubborn to downsize and start over (as I am), Lego offers the ability to order exact pieces using their Pick-a-Brick service. Be warned, shipping times were especially slow under COVID restrictions. Through some quick searches, I found a handful of Ebay vendors peddling pieces at slightly more competitive prices, with less control over piece and quantity selection.
-via Flowing Data