In regards to frozen piping.
If your house is plumbed in copper tube, PEX, or CTS-CPVC a handy item to have around are Sharkbite fittings. They will generally work (in a pinch) on Grey PB - Polybutylene as well but it is not warrantied or advised for PB.
http://www.cashacme.com/prod_sharkbi...t_products.php
And one of these that will get you in nearly any confined area:
http://www.drainbrain.com/specialties/autocut.html