I need some romantic ideas...?

My boyfriend of 2 years is going out of town for 2 weeks for work only coming home on the weekend between...I would like some romantic ideas to either hide in his duffel bag or something...I just want him to know I will miss him while he is gone and I also want him to think of me...I have already put a few event in his cell phone that will go off randomly throughout the week that say things like "I miss you" and "I love you" "XOXOXO"...anymore ideas for him????