Birthday gift for male best friend?

what would be a good gift to get my friend for his birthday? i was thinking a personalized wallet. whatever the idea id like it to be personalized because he has never gotten anything personalized and he would get a kick out of it. he doesnt drink so a flask it out of the question as is something like a lap dance because he has a gf. he is going to be 23 and weve been friends for many years. so what would be an ideal gift that can be personalized. thanks for answers.