As one of its daily deals, Groupon offers the Kershaw Funxion DIY Multi-Function Knife in Red or Gray for $19.99. Coupon code "TRIPLE" cuts it to $17.99. With $3.99 for shipping, that's the lowest total price we could find by $11. It features a 3" steel blade, Speed Safe opening system, blade locking mechanism, bottle opener, carabiner clip, hex wrench, and flathead screwdriver. Deal ends today.