I have a small apartment, also; I'm an artist and I read a LOT, so I don't have much room, but I made some space on a wall right above my long work-table/bench. In the middle of the table, next to the wall, I have my Bibles and prayerbooks. Above the prayerbooks I have two rows of icons. When my atheist friends come over, I don't say anything about the icons unless they ask questions. Some do. I figure the icons are part of my DNA, so if my friends accept me (which includes my cats, my paintings, stained glass windows, etc) they also have to accept the icons. And they do, because they are kind people. But I'm older. When I was young, I was worried about such things as being accepted by others. Now, I understand they simply accept me or they don't and if they don't they aren't my friends. But it took me many years to get to this confident state of mind and heart.