A creative and unique birthday gift for a man is a pair of suit pajamas like the ones worn by Barney Stinson in the TV show "How I Met Your Mother." Other good ideas are a customized BBQ branding iron or a set of personalized pub glasses.
A good gift for a man who plays the guitar is a pick punch that instantly makes guitar picks out of old credit cards, hotel keys and similar plastic items.
A more expensive but impressive and unique gift is a day driving an exotic car. A skydiving experience can also be a good gift for men who enjoy adrenaline rushes. A jellyfish tank is another unique gift that looks beautiful and can have a relaxing effect.