I tried a few times over the years in a dry creek bed on the farm and never found anything but I did a bunch of drilling in Custer SD one year and an old prospector came over and panned the top 20' of drill cuttings and found a couple small specks and a bunch of small ruby stones so I hauled a bunch of cuttings home and panned that fall and found a couple more slivers and a whole bunch of small ruby stones. Total value from all of it was probably 50 cents .
An old geologist in the oilfield claimed that the biggest ND gold nugget was found in a chicken gizzard over by Wolford ND. I found a related story from NDGS with turkeys. All I ever found in chicken gizzards was 22 brass . It would be a fun hobby if I ever found anything.
I can see some relaxing time spent metal detecting in my future , I haven't had a lot of time to get used to it yet but I ordered one and tried it out in the yard and within 1/2 hour I found a Canadian toonie and a few other coins within 50' from of my house.
https://www.dmr.nd.gov/ndgs/ndnotes/ndn6_h.htm
Another gold story.
http://www.prairiepublic.org/radio/dakota-datebook?post=71107