If you have the space I would take everything to another room. Maybe set up a few tables or use a bed to put the stuff on. Then you will have an empty room, that will help when you put the stuff back in. Then sort into piles by colors and/or size. Fold the larger pieces, roll up or fold the batting. The completed projects or WIP's could either be folded or hung on sturdy hangers. After the sorting, folding and hanging is completed then go out and buy the appropriate size bins and hangers for your stuff. Also shelving or storage units that fit the room if you need those. Get plastic bins that you can stack and see thru. Put a strip of blue painters tape on the ends of the bins and label them. Then put it all back in the room so it is accessible to you. If you can reach it, and see what's inside the bins you are likely to keep things organized and put stuff away.