I'm industrial designer, so I have some experience in project planning =)
I've built this house for my cats in trying to help them escape from my little daughter importunate attention.
When I built the first prototype, I posted it to the Reddit http://ru.reddit.com/r/pics/comments/vw54h/made_this_fourstorey_cabin_for_our_cats/ And I've got so much positive comments so I decided to build another one but more designful and minimalistic.
So I posted it again: http://ru.reddit.com/r/pics/comments/192ssf/as_an_industrial_designer_i_tried_to_bring_some/ And I've got even much more positive feedback and decided to bring it to the market.