Sears offers the Craftsman 12-Wrench Organizer, model no. 65272, for $4.04. Opt for in-store pickup to avoid the $3.99 shipping fee. That's $1 under last month's mention and the lowest price we could find by $5. It's wall-mountable but also fits in drawers with at least 3" of vertical clearance.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.