Test prep resources are probably my biggest seller with the math department. Those teachers prepare students for the S.A.T. math (even in math classes that aren't specifically S.A.T. prep classes), and some of them teach A.P. Calc and A.P. Stats. I work with Guidance to find some good, free test prep resources which I present to the math department and link to my website, and I purchase test prep books that students can check out. I also have a subscription to the Testing Education Reference Center (TERC) database which includes full-length practice tests, online courses, and ebooks for PSAT, SAT, A.P., and ASVAB tests (as well as a resume builder, scholarship search, college and career exploration resources, and more). Our public library has a similar product called Learning Express Library and I encourage our kids to get public library cards in order to access that tool as well.
The math teachers have also responded well when I show them helpful tech tools, like quiz makers or something to create study guides or Jeopardy games. We're a Google Apps for Education district, so I've been able to help them with the Google forms, Docs, Slides, etc. and I've helped new teachers set up their websites and Google Classrooms.
We also do a lot of tech installs for their computer software, their SmartBoards, apps for the iPads, etc.
Best of luck with your meeting!