A cheap way to keep carbon steel knives and axes lubricated and rust-free is to use common store-bought Mineral Oil or Petroleum Jelly.
Petroleum Jelly can also be used in other ways for bushcrafting. Petroleum Jelly combined with cotton balls makes a great tinder that's easily ignited with the spark of a firesteel. And with all these sparks flying about should a romantic encounter happen, all the better....
