Gift for school friend? please help!!?

I(boy) am 22 and my school friend(boy) 22 is getting married today. He is one of my best friend as i have spent almost 6 yrs in school.What should i give him on his marriage, any gift or what item or please suggest, any sagan or what. or any bouqey? and to whom should i give his wife or him. please suggest, thank you