Your 1099Misc is entered on the federal return and flows to the state returns. You are a nonresident of New York. It depends what your income from that workshop was whether you need to file with New York.
This is from New York:
New York State nonresidents and part-year residents:
You must file Form IT-203 if you meet any of the following conditions:
You have income from a NewYork source and your New York AGI (Federal amount column) is more than your New York State standard deduction.
New York State standard deduction table
Filing status Standard Deduction
Single and you marked item C Yes ...................... $3,100 Item C
If you can be claimed as a dependent on another taxpayer’s federal return, you must mark an X in the Yes box.
Single and you marked item C No .........................$8,000
Married filing joint return ........................................$16,050
Married filing separate return .................................$8,000
Head of household (with qualifying person) ........... $11,200
Qualifying widow(er) .............................................. $16,050
Complete nonresident instructions: