Building your mailing list

It has been on my mind to review and renew the way i gather emails for my monthly email list.  I have been lax at encouraging custmers and patrons to give this nfo but realize it is a critical piece of info.

So i visited what we were doing – an old cigar box (the kind that look like a wooden 5 x 7 file box) and printed blank cards.  Pitched a sign and a pen and that seemed to work out. 

I have seen other artists just place a notebook and pen out.

What works for you?  I would love feedback.