The version by Hemingway Kits is sssssssuuuuuupppppper easy and quick to make.
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I made one last year or so and it works a treat.
Ordering directly from them would take a while for delivery. But surely you could find plans for similar one somewhere on the web.
If you've got some raw stock and a couple small bearings on hand, you could whip it out in a day or two.