Using what you have for an advantage. 

 In my opinion, one of the best ways to get someone to remember something is by being creative. the above three pictures are great examples of this. the top one is a billboard with a light pole in the way. to most people this would be a horrible spot to advertize, but the creator of this ad used it to better his ad as wee see a car crashing into it. this not only draws in people attention for being clever but also ads a 3 denominational effect along with it. the next one is Micky D's here they use the reflection of the glass background to complete the logo. (although this may only be possible with well know logos due to the effect being lost in the day time) and the last one i thought was the most creative by using the anchor rope from the ship to look as if a noodle. this gives me inspiration to use preexisting elements with the advertizements them self to have them stand out more than the others that may be around them.