Lefty Strings
From This Might Be A Wiki
Lefty Strings were originally teased as an upcoming product in the 1996 Holiday Info Club mailer and on tmbg.com:
TMBG is going into the guitar string business, if only on a limited scale. "Lefty Strings," cosmetically altered to appeal to lefty guitarists (like our own Mr. Flansburgh,) are available in a Lefty Guitar Starter Kit (two packs of strings and three custom Flans picks) for just $10. They are packaged beautifully, with drawings by Flansburgh, and are made from top, professional quality steel and nickel in standard gauge (10-46mm). As good a souvenir as they are a working musician's tool. Plans to introduce "Girlie" strings "the strings for girls" and "Cyclops" bass strings "the strings for one-eyed bass players" are in the works.
Although not produced in 1996, the strings were made in 2018 as part of the 2018 Instant Fan Club and later released to the general public through tmbgshop.com.
The packaging is illustrated by Tony Millionaire and the front "features a portrait of John Flansburgh’s relative Ida Tarbell."[1] The back cover of the packaging explains that "these strings are not just for the left-handed guitarist. Made with pride in the U.S.A.. These strings will make all electric guitars finally meet their full potential in sound and playability."