My daughter is 4 years from getting braces.
But the local orthodontist is doing an amazing job of staying top-of-mind. She loves to wear their t-shirts — where everyone else at school (including parents) see it. I wrote about them a year ago, and the technique is still going strong.
If you have a long-term sale: What can you do to keep people talking about you for years? You need to stay in their face and in the conversation — which isn’t as hard as you think. Shirts, sponsorships, participating in the local community, desk toys … think about anything that people hold on to and/or display.