Turn an old futon into some sweet new shelves. Concept by Gabe Nathanson. He's the original "suspension invention" inventor. This particular design/implementation by me.

Ingredient list:

Turnbuckels - 1 per threaded rod
Threaded Rod - i used 1/4in
1 old futon - or other shelf like wood
box of washers
box of nuts (both should fit the threaded rod)

Tools:

drill
dremmel - optional

Took me about 8 hours from start to finish. Cost me about $40.

Step 1: Design Shelves

Design your shelves to fit your room -
these are totally adjustable, so you could do anything

Step 2: Deconstruction & Cutting

take apart old futon
cut wood into your desired shelf lengths

Step 3: Finding Studs & Drilling Holes

find studs in ceiling using stud finder
drill small holes where you want your rod to hang.

(they must match the holes you are going to drill in the shelves)

Step 4: More Drilling

drill 4 holes in each piece (2 on each end)-

big enough for your threaded rod to pass through

you want to make sure your wood holes match up with the holes in the ceiling

Step 5: Screwing & Hanging

screw the closed loop end of the turnbuckle into the holes
screw threaded rod into the other end of the turnbuckle
hang threaded rod as in pictures

Step 6: Nearly Done

insert wood shelves onto threaded rod - in whatever configuration you wish.
after each piece of wood is on, add a washer and a nut.
i used a ladder to keep the wood shelf held up while i ran the nuts up to the desired position. also used tape to tape the washers to the shelf so that they didn't get in the way
(optional) - to save a lot of time running the nuts up the rod, use something like a dremmel with buffing attachment to turn the nuts so that they spin up the rod.