One guideline that helps in the field of communication (and with the intent to make that communication memorable) is that the brain encodes not just the thing itself, but the context in which it appears. This is because the brain is engaged in what some scientists call active sensing, meaning that we seek out what is possible in a specific environment. The brain’s power of prediction did not use to have a lot of scientific focus, mainly because it’s somewhat common sense. If you go to your doctor’s office, you can recognize her in that context, but when you see her at the grocery store, it takes you a while to place her. In this example, the contrast between object and context is greater, partly because she is probably wearing different clothes and partly because you did not expect to see her there.
In light of these observations, you can consider one guideline to attract attention and create memories in other people’s brains: take an object, a service, or a product that is important to you and place it in a different context temporarily, just to make a point. The more extreme the context, the stronger the emotion. For example, a golf ball on a golf course is predictable and often forgettable. One that’s landed on the Moon? The image stays with you a little longer. Memory, in other words, often lives in the contrast between what belongs and where it doesn’t.