You might discredit them as too flimsy but there’s a very specific use case for handheld fans and misters: When you’re stuck somewhere without any other way to cool off.
For instance: Outdoors without a breeze, shade or a body of water to jump into. Or, indoors without any circulation, like during a power failure that effectively shuts down your air conditioning and any fan that plugs into the wall.
In these types of situations, this type of battery-operated handheld might even bring you back from the brink of heat stroke or even dehydration.
That said, not all battery-operated fans and misters are dependable; some don’t last long before falling apart.