Distinguishing the size of tablecloths when folded? Has anyone figured out a clever system for distinguishing the size of a tablecloth when folded?  Our dining room table is extendable with several leaves, so we have plain white tablecloths of three sizes. When the cloths are folded, they all look alike. So every time we entertain, we spend several minutes unfolding and re-folding until we find a tablecloth of the right size. An annoying waste of time.

Organizing them by shelf (in the closet) doesn't work because they invariably get moved around by whoever does the laundry that week. Personally I'd like to write a big "1", "2", or "3" on each cloth in indelible black marker, but my wife objects for some reason. :-)

Looking for a simple, out-of-the-box idea. Thanks.
I would fold them into a different shape that reflects the size of the cloth.  For example, if you were to do a flag fold, the smallest triangle should be the smallest table cloth.