With their glass-fronted doors, corner wall curio cabinets are designed for displaying keepsakes. The ample shelving space for a variety of items makes them very easy to organize.
The key to organizing a corner wall curio cabinet is to curate the items, so they look like a display at a museum rather than a mismatched collection of knickknacks. Sort your items into categories either by style, color, or material.
Use the odd number rule to group items of varying height together in threes or fives for a more visually appealing display. You can also create a display that plays with the Triangle Principle by placing similar items on either end of lower shelves and in the center of an upper shelf. You can also break up the groupings with horizontal items like stacked books or decorative plates.