In the summer of 2019, Sega Online Japan created this summer time fun character art with a burlap and watercolor style texture. It features Sonic, Tails, Flicky, Cheese, Amy, Cream, Blaze, Silver & 3 other chao including a Sonic-type. They're all doing summer style activities and are drawn in a…
Here is a Pajama/PJ top with a nice modern design. It uses silvertone ink for a starburst behind jumping Sonic. This may have been released in more than just Australia.