It’s not often talked about, but here in New Zealand, all across the country, grown-ups have blue sticker fever. Since February, one of the supermarket chain giants, Countdown, has customers collecting blue stickers in the hopes to earn one of six  knives and a knife block/chopping board. We achieve an unreasonable level of joy out of peeling each tiny sticker off and adding it to the chart on our fridge. It invokes the feeling of gold star sticker charts we get as children to award good behaviour. The thrill of being one step closer to a “free gift” is as ridiculous as it is real. The large Santoku (a large all purpose kitchen knife) I have my eye on is the result of at least $900 spent. It hasn’t changed my spending at all and I think most households can easily spend $900 over 12 weeks. That’s just a spend of $75 a week. Hell, larger families might even be able to save for all 6 knives. To get the full set, you would need …