fancy nospam tunes wrote:
What can we craft with the empty 35mm film cannisters, that would be
saleable in flea markets?

Make a small parts revolving rack, much like a paper towel or toilet
paper tube with the tops screwed to the roller with pan head sheet metal
screws. The rack could be of most any length and could be mounted to
benchtop, bottom of cabinet or wall. The "roller" ought be octagonal or
hex around to accept the flat tops.
Identifying parts could be hot glued or whatever to the bottom of the
film cans...

Bill