Show maximum originality. Many congratulations in verses, which you can find on the Internet, usually trivial. Besides, you risk to repeat. Agree, would be ridiculous, if you congratulate the guy lines that he had heard last year from someone else. The likelihood, of course, small, but still there.

Better to invent something of my own. For example, instead of cards you painted gave him the paper. If you make a gift from the team, will be very good if "painting" is a group.
Think of a special wish. It is always appreciated. Alternatively, look on the Internet, which famous people born on the same day, find a few similarities in personalities and the birthday boy (they always have, just think), build your congratulation on this comparison. If the guy has difficulty with self-esteem better figure out another way.
Prepare the surprise. Let this birthday will remain in his memory for a long time. Be sure to proceed to the preferences of the birthday boy. For example, you know that in his heart he is still a child who loves to play "war games". Together with friends, organize a paintball battle. This gift will surely appeal to a grown boy.

It may be wise to give going to a club or restaurant that the birthday boy has long wanted, but just didn't get to go.

Will be doubly interesting if the surprise will be accompanied by a mystery (the blindfold, the drive in an unknown direction, etc.)

Do not forget to tell the celebrant that it is waiting for something interesting. Otherwise his plans may not coincide with yours.
Order your special cake. For example, it will show the machine dream birthday or anything else related to his Hobbies. This gift can be accompanied with suitable words.