Amazon.de has listed several more officially licensed merchandise products for the PlayStation brand. This time, it looks like Numbskull will be releasing cufflinks. You can take a look at the three variations below this paragraph. 
As you can see, the PlayStation cufflinks are based on the PlayStation controllers. The entire DualShock 3 gamepad is used in one of the variants while the face buttons of the DualShock 2 is used in the other. For the last product, Numbskull utilized the directional pad and face buttons of the DualShock 4. All three products will be released in Germany on the 20th of February.
Sony recently celebrated the 20th anniversary for the PlayStation brand. Along with hosting the PlayStation Experience event last December, the company also released a special edition console. Based on the above-mentioned cufflinks and other products, it looks like Numbskull is trying to capitalize on the milestone celebration as well.