I've never seen the mousepad before, not even the artwork that's on it.. It looks more Nick than Noogy, but I believe it's just a printed fanart or something.

The T-shirt has indeed the same art as used on the original JJ2 shirt from Epic. I wonder if it's actually one from last century..

As for the cartridge, it looks legit to me.The plastic is fine, and the art is standard for all EU copies. Mine's on this photo btw: http://www.jazz2online.com/pictures/...w-shirt-owner/