another idea while driving

just driving down the road and BAM, right to the back of the head. gotta tell you, unlimited texting to email myself ideas like this has saved many a useful thought from being lost to my wandering mind

wait, this is another of those ideas i have that i assume would be obvious but actually aren't isn't it? went to look for plans to make a solar oven/"haybox" combo out of a cooler. why aren't there any plans? seems easy - make a solar oven out of a cooler with a 'solar lid' and then when needed swap it for the insulated lid for a 'thermal haybox' that can also be used on sun-free days. one box, fewer used resources.

the basic thought so far:

cheap cooler with a hinged lid
line the lid and inside with mylar
make a frame to fit the top with a sheet of glass in it
black cast iron pot with a lid. the pot needs to be not too much smaller than the cooler itself to function effectively as a haybox.
a rack to set the pot on to keep from melting the plastic of the cooler

my dutch oven is still too new and grey, needs a few years. i will likely have to buy a preseasoned one or search thrift stores