[Dollarama] Curl-A-Dog - $2.50 - YMMV
These were at Dollarama a few years back, then suddenly gone. Found today in Aurora, ON with the tongs and other kitchen gadgets. Dollarama so YMMV as to stock.
Yes, you can do this with a knife but personally we love this gadget as it's super fast and doesn't take up a ton of room. And yes, hot dogs may not be the best thing to eat, but that's another post. :-)
Edit to add price to title and to comment that was a super quick down-vote! Literally within seconds of submitting.