One of the best DIY cabinet organizer projects is a corral ... If you can build a simple drawer box, the rest will be easy. Mount the drawer on cleats screwed to the cabinet sides.
There are so many different DIY projects you can create with old boxes that there really isn't any reason to dispose of them if they are in decent shape. For example, you can build a two-drawer ...
I’ll admit that I was initially skeptical. But it didn't take long for this tiny, portable model to win me over.