Here is a fun mug to celebrate the 25th Anniversary of Sonic.
It's a white ceramic mug with only blue ink. The front has a sihlouette Sonic face with the "25th" logo in the side of the face. The back has the new for 2016 graphic of "little cute sitting Sonic" where he's almost SD/Chibi style. It too has 25th markings, but around the edge of the circle, and with some stars. The mug represents both the cute & cool aspects of Sonic & uses some nice design work along the way. Should be quite sought-after!
This is thought to be included as a pre-order item for (oddly) Sonic Boom Fire Ice in Japan. It is likely to be used for something else as well, since it isn't boomstyle.