If you have a HAM radio, and if you can see (Line of sight) Mount Lemmon down in Tucson (I have heard this net from Peoria) you can get on the EAARS network and talk with Santa Claus. (Or your kids can). This is a fun use of Ham Radio.
The particulars are:
There is also a repeater on Pinal Peak, Greens Peak, Mt. Grahm, etc. You can get the full system info here: http://eaars.com/eaarsnetwork.html