Hi David,
It's possible this is too little, too late, but maybe it can still be useful... I would recommend putting something in the NSTA (National Science Teacher Association) or CSTA (California...) publications- there are both "newspaper" and "magazine" formats of publications from NSTA, and only magazine formats from CSTA.
A booth at a conference is also a good idea- the CSTA conference is in San Jose this year. (
http://www.cascience.org/csta/conferences.asp)
Good luck- last summer's workshop was great, so it's awesome to hear you're continuing the trend.
Julia P.