They have automotive camera snake lights that you could slip in through the vent. Not sure what level of heat they are resistant to though.
Homemade Wood Smokehouse, Charmglow gasser, Smoke Hollow, UDS, dual chamber homemade grill
Certified MOINK Baller
We're surrounded. That simplifies our problem. - Chesty Puller
We will not tire, we will not falter, and we will not fail.
George W. Bush, Speech after 9/11 attacks
Scrap Iron Chef