This may sound silly but if he is the sort of guy who tidies up around the house, I would make sure the house was spotless, no garbage for him to take out cause it is already out, no dishes, no washing. Clean sheets on the bed, and the bed just really nice and ready for him, and the room ready for him to unpack in easily. Have food ready, a snack of something he likes and has missed if you are planning on going out later to his favorite eating place. After travelling it's nice to come home to relax and get settled. You know what he likes so I'd reckon just have things he likes ready for him. And maybe a nice thoughtful present on that freshly made bed.
I dunno, but damn that would be nice for me to come home to LOL