Display your media collection and easily find discs with this Atlantic Media Stix 62735674 set that features 4 interlocking wall mounts to accommodate a variety of CDs or DVDs. The mounts can be stacked or arranged side by side to complement your space.
So, love the idea for minimal space. But even if you break out the level and level it exactly there is no way to make this work. DVDs cases and everything just slide around and even with the slightest bump at the top can cause half the stack of DVDs to fall... No grip. DVDs don't look even and no grip that makes the DVDs and cases fall. Fix the grip, make it more stable. Otherwise I recommend spacing them 2 inches apart and use them both at once for more stability.