I'd search for lawns fertilized with aged horse manure, or just a horse pasture. You might be able to find some panaeolus cinctulus. They are pretty easy to identify, and confirm with a spore print, and are widely distributed across the US.
I had a trailer load of aged horse manure delivered to my yard for free, and pan cincts were popping up from it left and right all summer. I am also in Michigan.
The only downside is that they are pretty weak, weaker than cubes for sure, so you will need a lot of them for a good trip.