Depending on the extent of the wear there are a few things you can try to repair a worn blanket. If the damage is small, try darning or patching. If it is more extensive, you might consider affixing the worn blanket to a backing fabric and even stitching around the holes for added strength. This is a guide about repairing a worn blanket.
Vintage heraldic shields blue red rugby stripe shaggy acrylic
Lay New Nonskid to Restore Worn Decks - Practical Sailor
Repairing a Cashmere Baby Blanket?
Fix it Friday - Mending with a Blanket Stitch - Green Issues by Agy
Making Receiving Blanket Candies
Repairing a Crocheted Blanket?
How to Repair and Patch the Elbows of a Sweater Sleeve – The Daily Sew
How to repair my old blanket? : r/sewhelp
Huge tear in my comforter. Can someone please tell me the best way
How to repair your blanket – Seljak Brand
Knitwear Repair: Your Questions Answered — Collingwood-Norris
How to repair & safely clean a very old baby blanket? : r/sewing
Pet Blanket
Piggly Wiggly Self Service Worn | Pet Blanket