Tip: I just saw this seemingly nice ship building tip in a youtube video, for when adding various flags to ships.

So people are probably most used to finding decals or some thin pieces of paper in a kit box. If you do get decals, one can apparently place those decals on a bit of metal foil.. and then that flag should be fairly easy to form and maintain its shape. 🙂

I haven't tried this myself, but I thought it was an interesting solution.