http://www.alanwood.net/unicode/general_punctuation.html
http://www.alanwood.net/unicode/arrows.html
http://www.alanwood.net/unicode/miscellaneous_technical.html
http://www.alanwood.net/unicode/miscellaneous_symbols.html
http://www.alanwood.net/unicode/mathematical_operators.html
http://www.alanwood.net/unicode/dingbats.html

⚠ - white warning sign (triangle with exclamation point inside)
☺ - white smiling face
☞ - white right pointing index
☛ - black right pointing index
☠ - skull and crossbones
☑ - ballot box with checkmark
⚐ - white flag
⚑ - black flag
⍟ - APL circle star
✪ - circled white star
∴ - therefore (three dots in a triangle)
‽ - interrobang
❝ - heavy double turned left comma quotation mark ornament
❞ - heavy double turned right comma quotation mark ornament

http://docs.python.org/dev/library/turtle.html
http://svn.python.org/projects/python/trunk/Demo/turtle/