I'm thinking things like flagpoles in the yard.
Like you waste however much money and resources to keep your non-native grass around and they drop in a 60 foot pole into it to be able to fly an American flag and flag for whatever shitty college you went to.
What other things are there?
Most fruits have some level of radioactivity. I used to work unloading kiwis at a grocery store and the trucks had radioactive warning placards on them.