At my former company we used car names (yugo, veyron, fetish (yes that's a car), ...) and at some other we used (Slovenian) river names (sava, drava, mura, ...)

At my former company we used car names (yugo, veyron, fetish (yes that's a car), ...) and at some other we used (Slovenian) river names (sava, drava, mura, ...). Where I work now, we use super heroes (batman, hulk, ironman, ...).