A sledgehammer ... now I wish I had known that 25 years ago when I began compiling my tribe.
Life became a lot easier as they went away to school (anywhere that looked like Hogwarts was heaven to them) and College. School uniforms are easy, but there are a great many items. It's really a case of measure the child every which way and order what's needed.
Even so, a large family does require a lot of organising, and my family is a very active one.
At the beginning of the academic year, I sit down with a year planner, an online route planner for those long drives to and from schools, husband's diary and my own diary. I put in as much information as I can for school/College term dates and holidays, weekends home, healthcare check ups, hairdresser appointments, sports fixtures, choir practices, family events (as far as we know them), work meetings and major events. In fact, any sort of date that I can fix is put in The Big Calendar.
I do a lot of grocery shopping online, especially for non-perishables. We entertain a great deal and go out quite a bit, and we both have sets of olds to keep an eye on. Over the years, I have built up a splendid repertoire of dishes that don't take more than an hour to prepare and a well-stocked larder and freezer.
I'm organised but I don't run an army camp. I aim for an atmosphere of cheerful orderliness. After many years of marriage my OH is still my "date", and the children seem reasonably well-adjusted, so I guess we must we doing something right.
I come to work to recover from all of this.