What surprising things are made using fossil fuel?
I'm coming up with a fantasy world that was essentially supernaturally created ~200,000 years before its equivalent to the bronze age. I was created with a functioning ecosystem, but not any fossils and thus no fossil fuels. It would still have charcoal and peat, and I am thinking of implementing fantasy elements as workarounds for metallurgy, firearms, flight, etc. Still, what things would be missing from this world. I've already thought of:
combustion engines
plastics (I guess plant-based plastics are possible, though)
more difficult metalworking
paraffin candles and heaters
more difficult home heating