There are always moves in the fashion industry to introduce new patterns and textures.
Today’s invention enables eg jeans to be branded with a personalised pattern.
A normal electric iron would be fitted with a secondary unit. This would consist of a plate containing slidable squares of asbestos on a grid (in the form of one of these ’15’-type puzzles, but with many more empty spaces). This would allow the user to create a pixellated image of sorts.
Gaps in the grid would cause the hot, stationary iron surface to scorch the material locally, leavng a permanent pattern behind.
A refinement of this might be to use a ‘pin screen‘ device so that pins could make contact (or not) with the hot surface and thus achieve a more detailed brand.