This brings back so many memories. Way back when I was a kid around 6 years old we made our own whipping cream and butter from cow and goat milk. Our churn jar got smashed so we just filled large mouthed quart jars about 3/4 full of cream or milk. Capped it with a bit of plastic bag and a jar ring -then shook the death out of each jar. (usually 2 or 3 at a time, one for me, one for my brother, and one for dad)
We did try shaking but it was too hard on us. So we looked and looked and found a jar that would fit the dasher. So much easier!