Menards PVC slatwall is simply the best. It's the cheapest, lightest, and easiest to use. Unfortunately, it does not employ a standard slatwall profile. This is why I have designed quite a few Menards slatwall accessories, which I will be adding to this collection. If you don't live near a Menards, you can order the slatwall here. 

This holds a cylindrical object (like an Xacto knife, pen, or similar) in a vertical position against the slatwall.