How use vintage handkerchiefs ??

Why not make curtains or a valance from them?

Tissue holders, pin cushions, and potpourri sachets all make inexpensive, pretty, one-of-a-kind stocking stuffers, bridal shower favours, or hostess gifts.

Great Ideal

I personally have been saving this one for when I get a chance to make it. Darling shower curtain. Add a liner inside and there ya go. You could make a table runner or tablecloth too. Have fun! :-)

I have used them as scarf for my dogs......people have made quilts out of them....love the pillow idea above that Flipturn did. People have added them on shirts for tunic look too. Making it a hankerchief top or dress.

Make a handkerchief quilt!

Stitch them together lengthwise for a table runner or stitch them to a piece of fabric the same size and use them as throw pillows.

Crochet around them then join and make a quilt. Or use as curtain valances

I’m going to frame my Nanas

I like your window idea, I'm just trying to think of way to adhere the fabric to the wood or glass without damaging the vintage cloth. If you're not going to remove them you can use a spray adhesive.