Below you can see some examples of gestallt principles:
Reification is the constructive or generative aspect of perception, by which the experienced percept contains more explicit spatial information than the sensory stimulus on which it is based.
For instance, a triangle will be perceived in picture A, although no triangle has actually been drawn. In pictures B and D the eye will recognize disparate shapes as "belonging" to a single shape, in C a complete three-dimensional shape is seen, where in actuality no such thing is drawn.
The fundamental principle of gestalt perception is the law of prägnanz (German for pithiness) which says that we tend to order our experience in a manner that is regular, orderly, symmetric, and simple.
On the internet you can find all kind of these examples and tehy are quite interesting. Some examples are usable in your reports and some don't. For instance the example right here above is quite useful. By using colors boldness, italic you can implicitly suggest a relation between some information.
By ordering information which belongs together and splitting information which doesn't belong to each other you can increase readability.