Ideas on mounting lights/camera without drilling into truck.

I'm looking for ideas of how to mount reverse spotlights and a camera to the roof of my new truck without drilling or breaking the bank and could use some advice.

I was going to mount a roof rack and mount the lights and camera to it but roof racks are crazy expensive for what they are and I can't seem to find generic ones that fit. Rhino racks are 450+ for a set, I can't justify that kind of price when the camera and lights cost less than 25% of that. Thought of getting a headache rack and mounting to that but that costs even more.
Anyone have any ideas?

2019 Ram 3500 C&C.

 

That looks like a good idea, I'll give them a try.

 

Gonna run downstairs with a magnet to find out now

 

Not an aluminum cab, magnet sticks!
Thanks for the idea Brian!

 

The reviews are very good on those magnet mounts, I think they will work well. I'll just make sure to install the wires with a plug so I can take them off when I leave the truck in the yard.

 

Gotta thank you again, great find.
Got them today and mounted the lights to them. Needed both hands to pull the magnets off the the cab. Even better, I plan on putting the spot lights on a plug and 40 ft of slack wire so I can mount them by the trailer axles/wheels if any work needs to be done in the dark.
Going to put 40ft of slack on the wifi camera wire also. Going to make life easy loading and unloading cars off the trailer or reversing into tight spots with poor vision and no spotter.
I'll post some pictures when I get it all wired up.