The Gadsden Flag has been endlessly reinterpreted, modified, parodied, and generally played with, as the following examples show. The design violates a number of basic principles of good flag design, but its ability to capture the imagination and spur creativity shows it to have become a very effective flag nevertheless.
Amplifications:
Specific “rights”:
Porcupines:
Simplifications:
Parodies:
Generalizations to other flags:
Confederate battle flag
California state flag
Rainbow flag
Colorado state flag
Israeli flag
Anarcho-capitalist flag
Pirate flag
Anarcho-syndicalist flag
Arizona state flag
Arizona state flag
Pirate flag
Monochrome US flag
Anarcho-capitalist flag
Strangeness:
Because libertarianism is all about caring for the environment?
This psychedelic DTOM flag by Stephen Richard Barlow (on Deviant Art) owes more to the so-called First Navy Jack than the Gadsden flag, but is too strange not to exclude.
René Magritte knows a thing or two about the Treachery of Images.
Portland Flag Association 
That might be the most entertaining flag meme extant.
The Porcupine Gadsden has been in use for many years. I had a hand in designing it, and am rather surprised to see “Please” on the one you show. Ain’t never seen that before. In 2016 our flag generated some surprising passion and conflict, which escalated to absurdity:
https://www.unionleader.com/news/crime/man-in-fight-over-free-state-flag-seeking-parole-two-shot-by-another-involved/article_397d1640-2709-506e-8848-c126366d6d28.html