Cheap, simple vise stop that can be tucked out-of-the-way

[Seaco]

This is my version can be fitted anywhere!

 

[DaRiddler]

Say, I sort of like that! Looks bullet-proof to me. Looks as if it could flip back away from the action when not needed, and it could be raised to vertical to simulate the leftmost of the three in the picture above. Nice.

 

[lrsglory]

Made this set of vise stops, real versatal and ridged. Hope this helps.