In Minnesota we couldn't have stuff that left the ground and we always went to Wisconsin for that. Sounds like they changed that
EDIT: Here's the Minnesota law, sounds like it's better than Wisconsin now
CONSUMER FIREWORKS
Specifically Permitted - Wire or wood sparklers of not more than 100 grams of pyrotechnic composition per item. Ground-based sparkling devices which are non-explosive and non aerial, and contain 75 grams or less of chemical mixture per tube or a total of 200 grams or less for multiple tube items and include: fountains, cones, illuminating torches, wheels, ground spinners, flitter sparklers, flash / strobes, and novelty devices including snakes, glow worms, trick noisemakers, party poppers, and snappers.
Specifically Prohibited - Firecrackers, torpedoes, missiles, skyrockets, bottle rockets, roman candles, daygo bombs, mines and shells, chasers, and parachutes.
Selling Period - No restrictions on time of year for sale, possession, or use.
Age of Purchase - 18 years