My newest UX Knowledge Piece Sketch is about an interaction design topic: using metaphors, analogies and idioms in your designs.
Here is the most practical part of the article (so that you can directly apply this technique):
“An analogy is a comparison between one thing and another thing based on ways they are similar. Unlike metaphors, analogies are often about two unrelated things: they rely on one similar attribute.
Here is an example: the growth.design team created a redesign for Tesla’s charging dashboard. The savings widget tells you how many liters of gasoline was avoided (showing the environmental benefit). But can you imagine 2176 liters? Adding a “bathtub analogy” (it is “enough to fill up7 bathtubs”) makes it much more understable. The one similar attribute they used in this example is that both gasoline and water are liquids, so that both of them could fill a bathtub in a similar way.
So always think about what could be the similar characteristic that you can use for the comparison! […].”