In Guugu Yimithirr, an Aboriginal language of Australia, space isn't described with 'left' and 'right' but with compass directions: there's an ant on your west leg. Speakers therefore keep track of north at all times, even indoors without windows. It's a striking case of a language training a mental habit, without imposing a way of thinking.
In Kuşköy, a mountain village in northern Turkey, people talk across valleys by whistling Turkish. A 2015 study showed that whistled Turkish draws on both hemispheres fairly evenly, whereas spoken Turkish relies mostly on the left. The physical form of the signal, it turns out, matters to the brain.
Speech has no gaps between words. In 1996, researchers played 8-month-old babies a continuous stream of made-up syllables for just two minutes. The infants picked out the 'words' by tracking which syllables tend to follow one another. That's probability calculation, done without a calculator or any visible effort.