Many people collect lighters. I think these would make a nice addition to Subeta's collectables, like plushies and bobbleheads. They could be released with DPs, holidays and other events.

Also, I stand by my HamWow suggestion.

They'd be rather tiny details on an HA, but I don't see why not.

I think it sounds like something people would like. Although, I personally don't care. Kinda makes me feel like I'm promoting smoking... :I

I don't smoke, but I'd enjoy collecting them in real life or otherwise anyway.