Here's a beach towel for Sonic 2.
This MAY have been an item that was released in both USA and UK areas/but nothing's been proven. It's a normal, long/large size beach towel with red border. It uses the fully shaded but seldom-used "Sonic is pulling Tails forward" stock art. They're just placed on a curve/swirl abstract background. The classic logo is in full color at the top, and you can see the tiny black Sega copyright there down in the corner.
This was not a Japan art, as you can notice their shoes aren't shaped correctly, Sonic only has the 1 row of spikes and they're kind of misplaced, while Tails is not the orange color he should be. (There's also something slightly off about the face?) But, this isn't the same art/artist that was doing bad/ugly Tails either.
This would have released along side or right after Sonic 2...but it's uncommon wherever it was, because this photo only turned up in 2020.