There are many people out there guess that custom plaquesare something trivial that will not work magic in workplace? If you are one of those people, you need to stop thinking of a plaque in that way because really, this thing really is worth more than what you make of it. Sure, a plaque has its basic function; it allows you to show appreciation to other people and tell them how much you are thankful for their role in certain matters. But there are more things than what you have guessed about a plaque.
Those who receive the plaque will of course feel like they are being regarded very well. By giving a plaque to a worker, you indirectly give a boost to their confidence and help them give their best to the company. Who would not feel glad that their efforts do not go unnoticed by their superiors?
In a way, wooden plaques work as some sort of incentive that makes people want to work more and do their best to improve their performances. Obviously, this is not to say that people are motivated because there is a prize to catch. But it would be more effective this way rather than only telling them verbally.