On a bright afternoon, the white paper looks almost illegally fresh. The black ink reads clean and the joke lands without trying too hard.

It gives a bathroom or a guest loo something to look at. The handwritten patent text and the careful line drawing do the work it’s wry without being shouty, and it pulls focus away from the usual towel rail and mirror routine.

Hang it at eye level above the cistern, beside the basin, or in a small downstairs loo where every wall counts. It also earns its place in a kitchen as a kind of dry historical footnote.

Works with chrome taps, white tile, painted timber, and dark walls. A black wood frame keeps the patent-document feel intact.

Don’t bury it in a serious gallery wall of landscapes the joke needs room to breathe. Stretched canvas, ready to hang straight from the box.