Ace Hardware in Champlin has fatheads, crappie minnows, suckers, and shiners as well as waxies. I’ve also heard JR’s tackle fishing outlet near the fleet farm in Brooklyn Park has bait but haven’t gone there personally. I have a 5 gallon tank in my garage with just a filter constantly running, and I’ve had bait in there for weeks with very few minnows dying off. Just have to maintain it and change water out when it gets murky. (Suckers will dirty up the water quick). Definitely helps stay stocked with bait considering I live down the street from where Big Bs used to be.