It's a totebag, and it's Oofuri-related! Yay!
Additional image: Closeup of back print
It's another totebag, featuring an ever-so-spooky-looking Mihashi! Seriously, Mihashi looks SO spooky in this picture. Am I the only one who sees how incredibly spooky his face tends to look?! People always go on and on about how adorable he is, but personally, I think he's a little freaky, character design wise at least. Um, anyway!! I believe it was sold at the February 2008 Oofuri event, then somehow made its way to Animate where I just so happened to find it.
Additional image: Back