After a quick google search, I decided it was possible and set out try growing ginger as an edible plant rather than a ornamental plant as is usual here in the subtropics.
Here's what I did...
Green-ness: 5/5 for growing your own food.
Frugal-ness: 5/5 for growing your own food without spending a cent!
Time cost: Less than ten minutes from pantry to garden. A week to see a shoot. I'll let you know how long it took to get a bit of ginger out of it!
Skill level: Basic gardening!
Fun-ness: Great fun - even more, if I do get some real ginger out of it!