One headcanon I've had for a While is that right at the start of seps apprenticeship, he was Not comfortable asking for things. Especially when him+marcia r out somewhere and he sees smth in a shop that he wants he just. Won't say. And Marcia notices this! But she is also very aware that she can't tell the difference between his "I really want that but don't want to ask" look and his "oh hey that's cool" look. So her solution is that if she notices septimus staring at an Item she just will buy it and give it to him without asking if he wants it bc he will always say no even if he does want it. And it freaks him out at first and then he realises what she's doing and is like Oh 🥺 bc no one has ever done smth like that for him before. And anyway he goes from owning 4 things (shiny rock. Dragon ring. Hat. Apprentice diary) to having 1 million random pointless items in like. 2 months