Also on DA
I'm pretty sure most people already know about these shimeji things (even though I only found out about two days ago, hurr). However, if you do not yet know of them, you can learn about them from this forum topic and also find links to MOAR shimeji.
So after downloading and lulzing about a bunch of these things, I made one of my favourite fanart topic.
( Cut cut for download and info )