I use an old Little Pal grill I've had for almost 30 years. For a good while it sat unused. Now it goes on most camping trips. it cooks great. Don't think they make them anymore.
The problem with most grills is carriying the messy grill in the vehicle. I came up with a simple and super cheap solution. I took the cardboard box the grill came in and open the top and taped the corners. Then I mixed up some waterproof wood glue and water to thin it. Then I used a paint brush to paint on an old bed sheet cut into pieces. Kind of a cross between paper mache and fiberglassing.
Inside and out. I added another piece of cardboard to the bottom and coated that in place. Also made a lid for the box and did the same.
I did the inside one day the outside the next. when done I let it sit in the hot sun for a couple of days.
Then a used whatever outdoor paint happened to be laying around and gave it 2 coats inside and out. I used some leftover web strap and a fastex buckle for a lid latch handle.
It's not the prettiest but quite strong and waterproof. Very much like a fiber drum case. It cost me nothing but time. It also holds a small bag of charcoal inside the grill and a can of starter fluid also fits in the box. this was the experiment and I've made a couple of other similar equipment cases for my gear.
It's also very light to carry. I've used it for several years, No more mess in the truck!