getting all the money you need for your turn, then playing native villages to store cards for later, when you could have picked up cards to continue playing lots more actions.
I find it interesting that if you always pick up a card when you can with native village, it's 1/2card, but if you store nine cards, then pick them up, it's 9/10 of a card. Although, it's much more complicated than that... because getting 9 cards at once is much different then getting fewer cards at a time spread out among many turns.