Monster knees mending is my favourite form of visible mending. Make monster knees with simple scraps to keep your little monsters happy.
Stitch a Reversible Swimsuit - Juki Club
Monster Patches - ARTBAR
Mending knee holes with sashiko –
JUKI HZL-NX7 Kirei - Juki Club
Janome HD3000 Heavy-Duty Sewing Machine with 18 Built-in Stitches + Hard Case : Janome America: Everything Else
How to add monsters to ripped jeans
Paul's Miscellany
What is the best sewing machine to buy? - Quora
Monster Knees Mending - Juki Club
Monster Knees Mending - Juki Club
Juki UK