The Metolius Simulator 3D hang board begs to be used. It is not too large to be convenient, and at the same time has a huge variety of holds for offset pullups, big nasty sloped holds, micro crimpy fingertips, and huge jugs.
Key Features:

• The next generation of the #1 selling training board in the world!
• The master is CNC milled for perfect symmetry
• The holds are arranged along a broad arc that tapers outward and downward for better ergonomics and reduced injuries
• Tapers from top to bottom in both dimensions for better forearm clearance
• Fine texture
• Massive variety of holds
• Includes comprehensive instructions, training guide and all mounting hardware
• 28" x 8.75" (711 mm x 222 mm)
• Colors: blue/blue swirl, black/white swirl, brown solid, green/green swirl - sorry no choice