Mark outgrown clothes with a safety pin

This is a really useful idea: when your child puts on a piece of clothing that’s outgrown (and they refuse to take it off for disposal), mark outgrown clothes with a safety pin | Parent Hacks.  Next time that item goes through the wash, you know that it’s outgrown and it can quietly disappear rather than discovering again that it is outgrown the next time they wear it.  The comments are worth reading too for additional ideas.