I need some suggestions on how to piece together and secure to drywall small sections of 1 x 4 recycled wood pallets to make a wall shelving unit approximately 7' x 7'. The number of shelves, spacing and symetry are not a major concern. Securing the pieces together to make the longer runs and what type of ties to use to secure to the wall is the biggest concern - aesthetics come later. Form follows function. I would appreciate any and all suggestions.