A free sample from my Icons Vol. 2 pack: 45 icons at 16x16 across 11 categories — weapons, armor, potions, magic, food, resources, status, UI, tools, adventure and quest markers — each at 1x, 2x and 4x.
The Godot-specific part is godot_project/pixelkiln_icons/. Every icon has its own .tres AtlasTexture, already pointed at the packed sheet with the correct region, so you drop one onto a TextureRect.texture or a Sprite2D.texture and it draws. No typing Rect2 by hand, and nothing to re-slice when the sheet is rebuilt.
That is worth automating because a wrong region does not raise an error in Godot — it silently draws nothing, which reads as a missing icon to whoever downloaded it and as success to the build script. So a headless pass loads all 45 and asserts every region is non-empty before the zip goes out.
Commercial use in unlimited projects, no attribution required. The art is AI-assisted and that is disclosed on the page.