I don't have many memories of my mother but I do recall us Blackberry picking in a stubbled field; Skippy our tan & white jack russell terrier in tow.
We had a quarter-sized milk churn for a bucket. Its swing handle hooked on the crook of her elbow like a handbag. The battered stainless steel churn had a lid like a real milk churn which fit tightly to keep all the berries safe on the homeward trip to the kitchen a short distance away.
Jim, Chez Maison's media Guy (aka 'The Guy with the Hand') has very kindly made up a batch of jelly in his kitchen. He added port to the syrph to make it a bit special to ease the way through the Winter months.
The info on how he made the 'no-sew' jelly is available on the Chez Maison youtube channel on the KITCHEN playlist.