Some of my personal favourites are:
Yoghurt,
Pedestrian safety islands,
Pasteurization,
Penicillin,
Vaccination,
Chocolate,
Citrus fruit cultivars,
Wild cabbage cultivars,
Bread,
Herbal infusions,
Glass,
Electricity or rather making use of it
i stg this was the single BEST thing to come out of mcdonalds and they discontinued the thing. the juiciness, the taste, the weight of it. pure (canadian) angus beef goodness complimented by crispy and red onions. that stuff was running through my veins as a fat kid back in 2013.
that thing better come back one day. one can hope.
Coffee
The old me would disagree a lot, but I've become a coffee fan.