I need christmas ideas for thee boyfriend.?

ugg i reaally hate having to come to this for ideas for MY boyfriend's christmas present. but iv been with him on and off for 3 years and its the first christmas we'll be together for and seeing how its only like a month away i need to start getting ideas but i dont know what! hes 15, likes to workout bmx play video games. he plans on joining the army. i dont know. ideas please