For $25, you can buy a "I (heart) Potato Salad" hat[1] which appears to infringe on the tightly enforced[2] "I (heart) NY" trademark.
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[1] http://www.zazzle.com/i_love_potato_salad_mesh_hat-148005376...
[2] http://iheartguts.com/extra-special-guts/ (via http://99percentinvisible.org/episode/episode-87-i-heart-ny-...)