I was thinking about this a while back and then forgot about it, but the "Famous places you've been" thread made me remember it.
Back in the late 80's, early 90's in Europe, there was a fad with stickers, people would get packs of stickers (usually 5 or 6 inch round or ovals) for a band or a label or even a bar or something (Don't remember much, it was back in my heavy drinking days

). and they would put these everywhere, on storefronts, on telephone poles on parking meters. I think it was one of the first runs of what they now call "Viral Marketing".
I'd love to have a pack of stickers, that I could just slap on bulletin boards or notebooks etc, Leave in visible places. (Of course we would all have to be responsible enough not to put them on private property or use them as graffiti.
But I pass out lots of paperwork and a quick little sticker on the cover page would be a good way to introduce or peek the curiosity of the people I deal with.
(I was a mixed grasshopper/ant until I was woken up by a simple mention of the TSP by Kimbertac). So even a simple glance at a sticker might get someone on board, and the more ants we have, the less grasshoppers (mathematically as well as metaphorically LOL).
I build computers and get lots of little "Branding" badges and stickers with the hardware, I'd love to add a little TSP sticker into the mix.
Just an idea. I know the potential for abuse (Like some of the band stickers back in the 80's) could make this a potentially bad idea.
I print my own business cards and am working on a modified business card to hand out for the same thing as the stickers (Similar to whats been done by a few people on the forum). But stickers tend to be a bit more resilient (Don't fall from the hand into the trash quite as easily).
Stickers would just be a convenient extension of the business card idea.
I didn't go back and read the entire thread to see if this was suggested already, so if it has been, I apologize.
Doc