Sears offers the Craftsman 100-Piece Drill / Driver Accessory Kit, model no. ACM1001, for $14.99. Opt for in-store pickup to dodge the $7.75 shipping fee. That's $15 off list and the lowest price we could find, although it was $2 less in March. It features Phillips and flat driving bits as well as drilling bits.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.