While I'm at it I thought I would share a few more office decorations with you.
When I had those Escher sketches framed, I noticed a cicada bug in a ugly golden frame with a comic book caption "I'm watching you." It wasn't for sale but the employees just gave it to me after I promised to actually hang it up in my office.
there it is hung next to my standing desk.
In the last corner, I have this plane hovering over a picture of a bird. I took that bird photo last summer when Aryeh+friends road tripped to the last shuttle launch (parts I, II and III).