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How to organize a small office or guest room
Measure from floor to ceiling and back again!
Don't buy a desk, file cabinet, bookcase or bed without comparing sizes. A big mistake many folks make is buying something they like, bringing it home, and then finding out the object is taking up too much of the room.
Go up, not out.
This is critical to utilizing your space. A desk just deep enough for the computer with lots of shelves going up towards the ceiling to hold cd's, books, etc.