I've been planning to design a birdhouse for the past year but keep putting it off for other projects. Since then i've seen a rash of new designs that brings up the old saying "you snooze you lose".

Case in point the ultra simple UK designed Birdball.

"Birdball is a handmade clay sanctuary for small garden birds which is meant to offer year round nesting and protection from the elements and is a natural replacement for birds own vanishing habitats."