I wonder who the "some" are....a list of possible explanations:
1. They are among the Uber-zealous and not only will do anything to please "Jehovah" (in reality, the elders and the wts) they then trumpet their accomplishments to that end. How else would the wts know that "some" are packing away hobbie materials?
2. The actual number of this "some" is actually extremely small. The wts heard of one or two instances of this occuring, and rather than say "one or two" it sounds more impressive to say "some".
2. There are no such jws, and the wts simply is making it up.