If you pass by Tokyo (Akihabara) or Osaka (Namba) do not miss the most amazing shop for hobby and modeling lovers; Yodobashi Camera!!!
This place is HUGE!! HUGE!! HUGE!!
They have all types of tools, models (mainly Japanese brands), colors, etc[...]
... buy the iModeler mug.
You can use it for brushes, sanding sticks, cotton buds and even to drink coffee.