Manve Direct via Amazon offers the Manve 87-Piece Magnetic Blocks Toy Set for $39.99. Coupon code "MEJZAVWK" cuts the price to $25.99. With free shipping, that's $14 off list and the lowest price we could find. They teach children about color and geometrical shapes, including 3D forms numbers counts, magnetic polarities, and architectural design. Deal ends June 30.