After 2 years of living with babes, I'm finally living in a geezer pad.

I wanna decorate it up. All the walls are bare and show the marks of former pictures / blu-tac. So I need to fill em.

But how? Posters are rank and horrible but pictures of flowers are definitely not appropriate. So much shelf space, fireplace etc, needs filling, but what with?

Hints and tips? Candles = for shirtlifters?