Along with tranceiver and shovel, the probe is a backcountry essential. The Black Diamond Quickdraw Guide snow probe could be just the one for your pack:

Light and compact, with helpful measuring data all the way along, this could make all the difference when the worst happens. No reviews yet on Mpora Gear, which is probably a good thing - you never actually want to use one of these - but make sure you've got yours before chasing pow.