Look at the silhouette first
Place the objects on an uncluttered surface and look at them from across the room. Compare a tall bottle, a broad dish and a compact vessel. If their outlines merge, move one forward or leave more space between them. The goal is to see each object clearly, not to arrange the largest possible collection on one shelf.
Choose a restrained colour direction
Try a group of clear glass, a single colour family or one coloured accent among neutral pieces. There is no requirement to match every shade. Photograph the group in the room’s usual light before deciding; a display that works beside a window may look different on a darker shelf.
Balance glass with another material
A wooden tray, a plain textile or a ceramic piece can create a calmer background for reflective surfaces. If ceramics are the missing element in your arrangement, Lo Cantou’s guide to antique French plates offers another category to explore. Mint Vintage and Lo Cantou share the same owner; this is an editorial cross-reference, not an independent endorsement.
Keep the arrangement practical
Use a stable surface away from busy edges. Check each piece for chips or cracks before handling it, and do not assume that an old decorative vessel is suitable for food or drink. A display should allow you to remove each item without knocking its neighbour. Leave enough room to clean the shelf and reconsider the arrangement as your collection changes.