It took me forever to come up with an idea for a lock for this bag. Then unexpectedly, my VW died an untimely death - and supplied me with the fastening. The ball is the weight from the trunk cover.
Here is a new use for potato sack: I stuffed a toy for my new baby-grand-dog with it: it has a rattle in the middle (nut in an empty bubble gum container) and some crackling on one corner (plastic ad sheet from an orange net). He seems to like it.😉