When you have nothing to do, there is a solution: modular origami.
*Note: sorry for the bad quality of the pictures :(
I made these in my little bits of spare time, and I'm quite happy with how they all turned out! :) (BTW, the time of 1hr 30min is the time it took per model)
Names of all of these: (in order) (and with links)
Chandelle Kusudama http://goorigami.com/diagrams/chandelle-kusudama
Sweet Spring Kusudama http://www.youtube.com/watch?v=hha-KNUgOw8&feature=g-vrec&context=G2e6f0cbRVAAAAAAAACg
Etna Kusudama http://goorigami.com/diagrams/etna-kusudama
Little Roses Kusudama http://goorigami.com/modular-origami/little-roses/1315
Sonobe (variation) http://nuwen.net/poly.html
Last picture: left = sonobe (same as above but smaller)
right = sonobe variation (from the book Ornamental Origami by Mukerji)
bottom in middle = something else from Ornamental Origami
Conn posted this project as a creation without steps
Here are some similar tutorials to help you make this one!