Here's a shirt from the 1993 Why Does the Sun Shine? Tour. A TMBG road sign overlays Sol while containing and surrounded by the musical tools of the trade.
The back lists nineteen shows in twenty five days, arranged like the rays of our sun. It reads, "They Might Be Giants Why Does the Sun Shine? 9/93 Tour" even though the last couple of dates took place in October. My first show was in 1993, though in April and thus not part of this tour. The Earth is also present, though not to scale.