I shared this story on a swap and was asked to post a tutorial.
When Gramma was alive and still living in her apartment, we went to visit & I noticed an old quilt that I remembered always being at the foot of her bed when I was little, that suddenly was on her wall. Then I thought I didn't remember it being so small, so I asked her about it. She said that it was her mother's, and she'd decided that she'd held onto it long enough, and decided to share it with her sister. So, she took it apart (my family always ties off quilts instead of SID or FMQ), removed the border, took the seam out down the center of it, and stitched new off-white backing on the 1 of the halves. Then she sent the other half to her sister with the original backing and the borders. Well then it was too small to do anything with, so she got to talking to some of her friends about it and they told her she should hang it up so it wouldn't get damaged. She made some tabs and put them on the back with buttons. I asked her wasn't it too heavy to hang like that, and she said that the batting was so bad when she took it apart that she'd left it out when she sewed it back together, because she was just happy to still have the blanket at all, so it was light enough. I got my now ex-husband to take it down so I could see what she did.
Below is a photo tutorial. Remember to think ahead when you decide how many of these to use. The heavier the piece, the more strips it needs, and it's not for full quilts, only for wallhangings!