Papercraft

If meticulously cutting and folding pieces of paper to form intricate shapes sounds like a good time to you, you'll probably love this.

This Japanese website has the plans for a papercraft Astro Boy available for free download in .pdf format. I don't really know much about the art of papercraft, but from what I've gathered, the idea is to print out the plans on a sturdy grade of paper, carefully cut out the shapes with a razor, fold them as indicated, and combine them together to create a 3D object, in this case, a figure of Astro Boy. Everything is in Japanese, but the site has a few pictures of an assembled model in different angles so you can see what the final product should look like. Neat stuff!

Seems like a lot of work, but the result is certainly an interesting and really detailed piece of art. If anyone is brave enough to attempt this, send me a picture and maybe I'll feature it here.