Look up the term “anomonapea.” This means a word that, when spoken, sound like what it describes.

Examples would be “thud,” “clang,” “squish,” or “tinkle.”

However, it would take some observations to create entire new ones. If you have been paying attention at some motion picture films, you can often hear other examples, put in by foley artists who have to duplicate, or simulate sounds that may be impossibe or difficult to capture on recording equipment. The sound that large, metal structures make when stressed or collapsing can be more like the high pitched “roar” or “groan” of a large animal. The background conversations in a crowded, indoor venue can more resemble the cluckings of a yardfull of hens than that of people. A mosquito’s buzz can sound more electric, if heard from VERY close up.

Comic books have traditionally done a good job of putting sound effects in text form. “Pow.” “BANG!” “Screech.” A cell phone could go, “Bleebedy Bleep.” A drip could go, “spoink.”

The key is observation and imagination.

This type of exercise will require you to think and focus a lot on your inner thougts when you think about the sound. Imagine each scenario and focus only on the sound, then freely express it by putting abstract elements togheter of each situation.
This seems kind of hard to do but just focus on the sound and of how you would express it in an image, like the car crash could be a very edgy slightly-vertical object with edges going at random directions, which would represent the impact.
Is dificult to explain in words but just take your time and close your eyes, try to hear the sound and create an image in your head other than the action.

And also, try to relate the scenario with thing involved with it, like the one about hunger would make you think about emptyness, or the one about kindergarden could relate to innocense, childhood and the development of a persons mind. I don’t know, but hope it helps a little, it’s a bit hard actually good luck anyways!