Among the stuff - Rather, “the baggage.” The assembly was like a camp, and the baggage (impedimenta) of the whole congregation was probably collected in one place, where the wagons were arranged for protection.
Related Commentaries of 1 Samuel 10:22
1 Samuel 10:22
22 Therefore they enquired of the LORD further, if the man should yet come thither. And the LORD answered, Behold, he hath hid himself among the stuff.