I actually own a freezer, but I keep it turned of because don’t have anything to put in it! But I would like to have ice available, especially in the summer. Using it for this one and only purpose feels wasteful though.
I do have a fridge which is mostly empty. If possible I wouldn’t have that turned on either, but it’s needed for some medical supplies. Searching the net for tips on how to make ice in a fridge didn’t give me anything useful, the results was mostly about built-in icemakers.
I decided to just experiment with random containers, and forthwith found a solution that worked. I just piled up an loaf pan sideways against the freezer wall. I haven’t timed it, but it seems to make ice in about 12 hours.