I had a special cupboard made, for mine.
It cost little really, and it is very very thin.What is great, that only about 35 books can be stored.It has a door, so they don't look messy, some are not the best looking.
Makes sense, because any more and well they just collect dust.
I think one needs to be sensible, ''books in moderation''.You can always get more! Once you have read them.