Hi there :)
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
The paper dimensions we are going for is 1x6 rectangles, so cut your 10 squares into 6 equal strips.
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.