Romance!

Okay so my SO is not romantic at all what so ever. I have been trying to spice up our relationship and try and do new things to keep a spark. But he is very (I mean this in a nice way) nerdy. Goes to work, comes home, place video games, sleeps, repeats. Nothing really excites him. We live together and I’m going on a girls vacation tomorrow and I’m trying to think of something that I can do, or send to our apartment to be romantic and show him that I’ll be missing/wanting him. But because nothing seems to excite him, I have no idea what to do. Any suggestions?