Placing Mario esc coins in a level pretty slow

Godot Version

4.7.stable
3D project

Question

I have a collectable that is basically a coin, and I want to place it a lot around the levels I have, but dragging it in and duplicating it tons of times ends up becoming pretty annoying to deal with after a while.

Is there a better way to do it? I know Godot has Tilemap but it has no support for 3D besides Gridmap which cant instance scenes /:

Thats level design, not much you can do about that. You can add them to a tile map layer instead as just a scene, this gives you the advantage of snapping automatically and just holding down the button for rapid additions.

Do you know about scene painting? Never used it, but it might help make it faster.