Chalk Kitten

A cheerfully-colored cat sketched on the sidewalk near the Lark Street Ben & Jerry's ice cream shop.

The Moody Bee

A not-so-cheerful, but oh-so-cute bee on Lark Street near Lancaster Street. 

The Happy Cone

A cheerful safety cone on the Empire State Plaza.  It's the second "decorated" cone I've come across.

Street Art

I don't know if this orange cone was left behind by workers or somehow "acquired" from a site up the block, but someone took a Sharpie to it and turned it into a comic character with an appetite.