You mentioned "the other side of room"--- do you have empty shelves available there, or does some of that stuff in pic really belong with its own kind on the shelves? If so start with putting things where they really belong.
I think I saw fat quarters scattered thruout in the pic-start with that..either on a shelf or in a tub or whatever.....
the suggestions given are great, so just roll up,your sleeves and start!