Yeah, aren't those "thought bubbles" an odd thing? I had to pick up two packs of them last week. I'm still trying to find other uses for them, but it is proving difficult. But I'm sure someone will.
Seperated among several minifigs:
"Please" "Don't" "Touch"
"Visit our website" "www.LUG.com"
"www" "lug" ".com"
Or you could use them as party favors. Get a bunch of generic figs and use them to mark seating assignements. Would be great for a LEGO themed wedding.