Basic low-poly cover full cover for BIC J6 lighter (your common BIC lighter), fits snug and probably easiest to remove hazard sticker. My first project in TinkerCAD and I'm pretty happy with how it turned out! No supports, any filament, though you might want to try a PETG or PLA+ with a higher melting point, but haven't found it to be necessary.
The author hasn't provided the model origin yet.