These are some potential projects that I may build in the future, plus some long-abandoned furniture design ideas.
For my office space, I designed a desktop to fill the 10-1/2 foot space from one wall to the other.  At the outside edges, the desk is almost 4 feet deep, and then angles towards a 29" deep center section.  I designed it to fit snugly on top of some store-bought rubberwood cabinets.
Design Inspirations
Garden gate