Such as spears with heads made from bone. Sewn garments with sleeves and pants. Usually organized in groups of 20-50. Or extended family. Need to find mates.
Bands tend to break up after surplus is exhausted or after a ritual period.
No territories to defend. Division of labor. If one member had a bad day, the other might have had a good day. Production, education and protection of children. Security in old age and in event of accident.