I really like the Peco 009 Dummy Turnout Levers (SL-428) but thay have always looked a little large for 00 (1:76) scale to me.
Perhaps they would work as narrow gauge O scale levers?
After a splosh of grey paint, some rust colour and a wash of dirty black I tried them next to my turnouts.
Encouragingly, they still look good when I test them with some O scale figures.
Turnout levers come in a whole range of shapes and sizes.
These are good enough for me !