What is "pre-science"? Starting a fire, or keeping the fire going when a tree was struck by lightning may be the first use of science.
The uses of that sharpened stick, or the clay pot, or the hot stones dropped into the pot (carefully, so the pot does not break) to heat the water, may be scientific.
Besides cooking, the sharp stick and the needle and animal sinew thread, I will say the best invention was an ink that did not wash off the scraped hide of the dead animal. Or tanning the hide. Or paper-making. Anyway, the inventions that made writing portable and permanent.