Here is a goal: How to create a homemade potato shredder

How would you accomplish this goal?

Options are:
-- Take a plastic can and punch holes in it with a screwdriver, use the screwdriver to pry the holes wider and file the edges of the hole with a rat tail file. Press the potato against the can and push it back and forth.
-- Take a traditional tin coffee can and punch holes in it with a screwdriver, use the screwdriver to pry the holes wider and file the edges of the hole with a rat tail file. Press the potato against the can and push it back and forth.
Take a traditional tin coffee can and punch holes in it with a screwdriver, use the screwdriver to pry the holes wider and file the edges of the hole with a rat tail file. Press the potato against the can and push it back and forth.