I was browsing the tech news sites when there was a post about how the Smithsonian Museum had released many millions of images. Knowing that all US government material is released without copyright I thought that there was a good chance that some of the museum images might be. But it looks like the majority of them are CC0 that is to say copyright free and you can do whatever you like with them.

Since this is a museum and one of the largest in the world I looked for various items and they have huge numbers of images of the sorts of stuff that would be useful to make top down icons. Take this one for example:

https://www.si.edu/search/collection...ia_usage%3ACC0

A search for "Plates" with the open content ticked. 10700 plate images all nicely photographed with backgrounds that you can clip out and make plate icons from. I looked for daggers and other swords and there are many. So I think this is a great resource to obtain some icon material.

https://www.si.edu