I've always wanted to create a negative space logo. Think how the FedEx logo works (genius that it is) so many people don't see the arrow. That's the use of negative space, not easy.
This is a recent concept and design I completed for a network called CBN that brings together Community Centres in and around the Borough of Rochdale. For these community management teams the CBN will help them get training and support from people already doing the job, so a knowledge base via the already existing network as well as creating direct links into the communities they serve via selected individuals and groups. So hope you can see the relevance and the simplicity of this device.