Book Dummies: A Practical Fix for Awkward Empty Shelf Space

25 August 2026 • By Kamil Safulak, Antykwariat Polski

Photo by Peter Herrmann on Unsplash

Every built-in library or freestanding bookcase eventually reveals its weak points: a run of shelving too shallow for a full book collection, a top row nobody can reach, or a gap left after a client's actual book collection is unpacked and turns out to be smaller than the joinery drawings assumed. This is where book dummies earn their place in a designer's toolkit - not as a gimmick, but as a precise, controllable material for solving volume and proportion problems that real books cannot solve on their own.

Unlike sourcing secondhand volumes, which is slow and yields inconsistent sizing, book dummies can be specified to exact height, depth and spine width. That makes them a working material for interior design, comparable to specifying a fabric weight or a veneer thickness, rather than a decorative afterthought added once the joinery is finished.

Why shelves end up with awkward gaps

Awkward empty shelf space usually comes from one of three sources. First, the architectural module: shelving is often designed on a regular grid, but book collections are irregular, so some bays end up under-filled no matter how the books are arranged. Second, changing briefs - a client downsizes their physical library, or a hospitality operator wants the look of an established collection on day one, before any real books have been acquired. Third, structural necessity: deep shelving built for other purposes (media storage, lighting, HVAC returns) often leaves a shallow front zone that real books simply cannot fill convincingly.

In all three cases, the instinct to 'add a few objects' rarely reads well at scale. A vase or a stack of oversized art books can break up one shelf, but across a wall of shelving, the eye needs rhythm - and rhythm is what book dummies are built to provide.

Using book dummies to correct proportion, not just fill space

The most common mistake is treating book dummies purely as volume filler - stacking them in to make a shelf look 'full'. Used properly, they are a proportioning tool. Before specifying anything, map the shelf run and identify where the eye naturally lands: sightlines from a seating area, the height of a doorway opposite, the horizontal band at eye level. Dense, dark spines belong lower and toward the ends of a run to anchor it visually; lighter, taller volumes read better higher up, where they lift the composition without adding visual weight.

Spine width and colour sequencing matter more than most people expect. A run of identically sized dummies looks staged in a way that undermines the whole point of the exercise. Varying spine widths by even a centimetre or two, and breaking colour blocks with the occasional outlier, does more for credibility than any single high-end object placed on top of the arrangement. This is covered in more depth in our built-in bookshelf styling guide, which walks through sequencing logic shelf by shelf.

Matching the format to the depth of the problem

Not every gap calls for the same product. Loose book dummies, styled individually or in small arrangements, suit shelves that are otherwise genuine or semi-genuine, where the goal is to blend in rather than announce a scheme. For shelving that has become purely decorative - a media wall, a reception backdrop, a run of shelves with no functional storage behind them - spine panels or panel-with-support systems solve the problem faster and more durably, since they are built as a single unit rather than assembled book by book.

Where the empty space in question is an entire bay or a full wall rather than a shelf or two, it is worth thinking at the level of the whole installation rather than patching individual gaps. Three-dimensional box constructions and leather binders give a designer more control over exact dimensions when the shelving itself was never intended to hold real books at all - useful in offices, hospitality lobbies, or private libraries assembled quickly for a specific look.

A note on specification

When briefing decorative book arrangements to a workshop, give the same information you would for any bespoke joinery element: shelf depth, height clearances, lighting conditions (UV exposure fades leather and cloth over time), and the general colour and material language of the room. The more precise the brief, the less the finished arrangement will feel like an afterthought - and the more convincingly it will hold its place among any genuine volumes shelved alongside it.

Contact us to discuss a bespoke project, or browse our library arrangements and styling catalogue.