MINNEAPOLIS — Best Buy is teaming with fashion brand Kate Spade for a line of exclusive CE accessories. The retailer said the partnership is just the first in what will be a series of fashion-focused collaborations. The Kate Spade New York line will include portable power packs, as well as smartphone, tablet, and laptop cases and sleeves. More than 50 SKUs will be available, said Best Buy, and products previewed on BestBuy.com at press time ranged from $39.99 to $79.99.