Sewing for kids-- It "seams" obvious
I just thought of something about ready made clothing that my own mother started complaining of back in the late 1960s, and it has application to making new children's clothes at home, or reworking clothes to fit children in these days.
Her complaint was that off the rack clothing was no longer being made with wide enough seams that clothing could be "let out" for a growing child, or to pass on to a child who was larger than the original wearer.
The application, of course, is to make sure that, where possible, we make children's clothing with excess material in the hems and sew seams a bit wider than patterns might lead us to allow for.
That might "seam" obvious, but if one is younger and never experienced a world of hand-me-downs and use-me-ups, perhaps this would not have occurred to one. And if I understand serger sewing machines, that would mean not to serge the seams at all-- because doesn't that cut off the excess seam material and sort of seal it all up in thread? (Sounds wasteful of thread, too, but I might have that wrong. My machine only sews straight lines forward, reverse. Very simple. I'm naive of machines younger than 1940s.)
Relatedly, I suggest that if you are buying pants that might need knee patches, try to buy a pair that is way too long so that the extra length may be turned into matching patches. I sit here now in jeans so patched.