I am a fan of second hand item. Almost all of my electronics are second hand. Those that are new, are purchased if only it is cheaper than second hand prices. My furniture and fridge are purchased at 10% of the actual costs, the trouble of moving them is worth it.
But there are some things that I had never buy second hand, but now considering maybe I should:
kitchenware, including cutlery. Although I do eat out at restaurants.
Clothes, not even branded ones.
Beds, although I do enjoy sleeping in hotel beds.
What about you?
Note: consumables like condoms and toilet papers are obviously not for second hand. If you say this, you must have lukewarm IQ.