This is when strategy decisions can get tricky. Ploys such as quirky cartoons, bright lights, or loud colors can interrupt the gaze of any passerby. It's a matter of selecting a visual scheme that will grab the targeted product market. Next it should be a strategy to effectively inform the targets that they need what the sign is communicating. This can be done with language.
Verbal messaging is often effective.
It can offer varying degrees of directness, simplicity, or subtlety. Verbal language also can be used in conjunction with pictures or other, more abstract forms of product representation. Sometimes the sign can just suggest the product's function-what it is and why it is used. Other times, the use of company and product names can work. However, overuse may result in the undesired effective of seeing your sign as an empty corporate plug.