Noora, Kawther and Mariam’s examples of Cinemagraphs.  I like Cinemagraphs because it has very subtle movements which draws the viewer’s eyes to a particular area.  They are easy to create, and with a creative idea and attention to detail- they can be very effective.

Here are some interesting links about Cinemagraphs and some inspiring examples:

A good tutorial on how to make Cinemagraphs
Cinemagraph collections