For those of you unfamiliar with the art of Origami, these are probably the models on this webside with the highest skill/price ratio :) They cost you nothing except time and a few sheets of paper...
Aaaaand, this piece of art is completely biodegradable :)
Here's a little bit of complex paper art for you to have some fun with. The assembly is very similar to Thomas Hulls 5 Intersecting Tetrahedra (there's an instructable for it), I would recommend folding that first if you haven't yet.
The original diagrams are in the OrigamiUSA issue of 2002 ( I think).
This is a complex rendition of a Great Stellated Dodecahedron, with 60 pieces of paper folded into 20 triangles comprising 5 tetrahedra.
Oh and if I win the Epilog laser cutter with this instructable, I will use it to laser a labyrinth into a medical textbook of mine and put a ball bearing inside the book that one can roll around like a maze... I've been wanting to do this for a while, but I haven't gotten the opportunity yet, so if you're feeling nice then vote for me :) I might even post an instructable about it if I get it done...
What you will need:
10 squares of paper
CDO (Kinda like OCD, except the letters are in alphabetical order. As they should be...)
Ok lets get started!
Step 1: The Paper
There are several colouring schemes which work well for this model, I used one in which each tetrahedra was a single colour (12 pieces of each colour, 5 different colours), but you can make each triangle the same colour (3 pieces of each colour, therefore 20 different colours/patterns).
A random or chaotic pattern contrasts nicely with the sharp lines of this model and works well too.
Don't skimp on the paper. You are going to spend quite some time folding this, the extra 5 minutes you take to print out a nice pattern will make a world of difference when the model is finished.
Step 2: The Folding Begins!
Each piece takes about 6 or 7 minutes, and there's 60 of them, so you're talking 6 or 7 hours just for the folding, and another 2 or 3 to put it all together.
There are no shortcuts to anywhere worth going!
Ok turn your paper sideways (if you are using coloured paper, start with the white side up) and fold the bottom right corner up. do the same with the bottom left corner.
This is only a guideline crease, so don't crease too heavily.
Do the same on the other side.
You will notice that this divides the paper into 2 UNEQUAL halves.
I find it helps to fold a little bit on both sides, then to tackle the middle.
Fold again to the middle.
Fold the top left corner down to the middle.
Repeat on the right hand side.
Fold the bottom right corner up along both of the existing creases. The creases are present at the back, these folds are to crease the front of the paper.
Unfold all this, and flatten the whole piece again along the midline to make sure it's flat (don't worry about flattening the left hand corner, it's difficult and unnecessary).
Fold another 59.
Tuck the double flap of one model into the sunken fold of another (flap visible for clarity, should be hidden).
Pinch to lock, and fold the other flap into the other pocket.
Stick 3 together into a triangle.
The assemble of this model is not hard, if you concentrate during these first couple of steps.
Notice the EXACT position that the 2 triangles are in.
They go over one another in a clockwise fashion, copy this exactly.
Wrap sticky tape around this corner where the 3 triangles meet to hold it in place.
Remember: small edge on the face of the tetrahedron, the 3 small edges touching one another where the triangles meet.
Wrap sticky tape around the 4 corners to make sure the tetrahedron doesn't fall apart.
Add an extra triangle as shown, and assemble another tetrahedra intersecting the first one. I have uploaded the instructions for the assembly of 5IT to make life easier :)