Apart from the previously mentioned cases, some more B+ centric products are starting to appear.

Over on the Cyntech shop, they’ve got the following:

• 40-way ribbon cables of various designs (1 2 3)
• 40-way paddle connector board
• 40-way GPIO Cobbler boards (for use with the ribbon cables so you can break out to a breadboard). There are two variants: standard and T-shaped.
• Another case, this time £4.99: