Amazon has the 16-Pack Nacial Heavy Duty Garage Storage Hooks w/ 2 Extension Cord Storage Straps (Black) for $32 - 50% off with coupon code 8FGK532M or 5YVFYWXM at checkout = $16 with free shipping on $35+ or with Prime. 

Also available in 18-Pack for $18 and in 26-Pack for $23.