Find a local vendor or call Cisco directly. They have demo kits available. A Cisco partner might be set up to give a full presentation. There is also a Cisco tech van that drives around with a full remote office setup built in.
My boss frequently heads to places with a complete setup to demo to prospective clients. Like MorfiusX suggested, call a local Cisco partner or Cisco. They'll get someone out to your place to demo some stuff.