In part of my basement the suspended ceiling is dropped lower to incorporate duct work. Unfortunately it's right where I need to install a light...

The duct blocks access to the joists above, so I cannot attach anything to them.

The ceiling is light duty, so by code cannot support a light fixture.

About the only thing I can think of it attaching to the duct itself, but I don't know if that's ok by code.

Any clever ideas???