“I do many things well. None of which generate income”

“I do many things well. None of which generate income” is a jocular saying that has been printed on many images. The saying (“I do many things well, none of which generates an income”) has been cited in print since at least 2008 and is of unknown authorship.
 
     
Google Books
No Job? No Prob!:
How to Pay Your Bills, Feed Your Mind, and Have a Blast When You’re Out of Work

By Nicholas J. Nigro
New York, NY: Skyhorse Publishing
2008
Pg. 89:
You might want to sell your ideas here, and perhaps even add to their unemployment line, which features various slogans on buttons, T-shirts, bumper stickers, and more, such as: “Streamline Business: Outsource the CEOs”; “If You Think the System is Working, Ask Someone Who Isn’t”; “I Do Many Things Well, None of Which Generates an Income”;  ...
 
Twitter
Annetta Ribken‏
@netta50
I do many things well. None of which generate income. TGIF.
1:18 PM - 13 Feb 2009
 
Twitter
Beth Ziesenis‏
@NerdyBFF
Ha! I can relate: RT @netta50 I do many things well. None of which generate income. TGIF.
1:19 PM - 13 Feb 2009
     
Folio Olio 
Thursday, August 4, 2011
FACIAL EXPRESSIONS FROM AROUND THE WORLD
(...)
I do many things well, none of which generate income.
 
Me.Me
I DO MANY THINGS WELL NONE OF WHICH GENERATE INCOME BUT I’M STILL RICH POSTED BY CLIO MEME
MEMES 🤖 GENERATORS RICH INCOME GENERATION INCOMING
FOUND @ 265 LIKES ON 2016-12-02 14:45:28 BY ME.ME
SOURCE: FACEBOOK
 
Twitter
💎iluvmayward 💎‏
@iluvmayward1
I do many things well, none of which generate income.
#TOINKSBillboardPHFreshPick
4:29 AM - 3 Jul 2017