Mild disagreement. It depends on how much of a kit, that is, how much space there is in your kit. The very, very small ice fishing spoons are not much bigger than a hook and are very effective on many, many species as they work without the need for bait as small minnow imitations (near universal bait) and are also designed to work tipped with bait. These lures are the kind of multi-taskers I would recommend for all but the most restricted survival kits.

But then, get any two fishermen together ....

An example (recommend the nickle back): http://www.customjigsandspins.com/icefishing/hardspoons/demon.html