Tiergrade via Amazon offers Prime members its Tiergrade Push-Pin Magnet 60-Pack for $16.99. Coupon code "GXV8UILZ" cuts it to $7.99. With free shipping, that's tied with our mention from two weeks ago and the lowest price we've seen. (It's also the best deal now by $13.) Each magnet can pin up to 11 sheets of paper to any magnetic surface. Deal ends December 31.