I've never seen any spawn for this mushroom for sale. Since it grows on dead wood, it might be relatively easy to culture; but you would need spores at least to grow it. It is pretty common here in the Pacific Northwest, but not so much in the Midwest. A good source of location information is iNaturalist, which shows a fair number of locations in Wisconsin, but not much in the rest of the Midwest. If you live anywhere near a location where it is found, you could look for it in the fall and collect specimens. I've found it growing on rather skinny dead branches; so it would be possible to cut off a piece of wood with growth on it and use that to start a culture.