Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

Okay, so first ,I'm going to back up some of the ideas expressed so far. Nipple rings, horn caps and musk all sound awesome.

For clothes, maybe something for a workout so he could help people in the gym or something. Though something more butler like  would be cool and it would fit his role as a host in the hotel, or if the player is sticking with something from the early 19th century, a gentleman's set could also work. For accessories, I think horn rings could be interesting. They would add on to his charm while not getting stuck in cloth or being too much of a handicap. Simple earrings could be a nice addition and not mark him like cattle.

That's all I can think of atm. Good job on the game guys and I wish you the best! :D