I use magnets to latch- no handle to be seen so people that visit my shop don't know how to open the cabinet.
Not that I don't mind them checking out my guitar(s) but I know when they do. Even with the hinges showing they're not quite sure how to open it lol.
Vince Gill has a great idea- @ 5:30 - I thought about building a drawer cabinet for my studio area (inside house) but a metal rack works good. A cabinet could lock but why?
I have to many guitars to display so I just 6 or 7 handy and switch them out whenever the feeling hits.
I use Red Oak Michael. It's easy to get at Home Depot here and I get to pick.
I get the material from Mojotone. I think the next one I build I'll see grill cloth instead of the guitar case type material.
Would be cool to see what you build Michael.