I certainly don't know. I just like to make them.
I suppose one could hang one on the wall, use one on table under the teapot, make a pillow, wrap a dolly, sew one to a tote bag, or display one on a tiny quilt rack on a table to gather dust.
As an avowed minimalist who doesn't currently own anything that could be considered a "decoration" (not even a single Christmas ornament), my inclination is to wad a tiny quilt up in the sock drawer. I do draw the line at using them for engine rags.
The point is, they don't have to be useful or displayed. The joy is in the making. However, if you want to use one as a potholder, be my guest!