|This tip follows on from a previous tip from jbsews ....
After I made many different width pressing guides in this way some years ago, I stored them thus:
Take a large 'Lunch' sized ziplok plastic bag and sew channels(wide enough to take one pg each) from top to bottom of the bag(starting below the 'zip' section). I sewed about 5 channels per bag. I used one colour of manilla card for metric measurements and a different colour for imperial, storing them according to their colour. Each size of the pressing guide strips is clearly marked with a felt tipped marker pen.
Then I clipped the tops of the bags together with a plastic 'bulldog'/bag clip (which has a hanging hole) and mount the collection on my display board using a cup hook. They are visible at all times, and neatly stored.