Cook once, eat twice. So where possible cook double and freeze or turn it in to a different meal for next day.
Anything that would go a a hanger in a closet is hung up wet on a hanger to dry and if needed sprayed with crease release or steamed once dry.
Keep on top of laundry , do a daily wash if needed , seems less of a chore than waiting until the weekend
Keep calpol/ pain relief in your bedroom/ bathroom / ( it seems such a big deal to go and search for medicine with a poorly child in the dead of night, much easier to just go to your bedside drawer/ bathroom
Also keep a sick bowl / kleenex etc upstairs for quick access.
If it needs to go upstairs don't put it on the stairs until later. Take it up now. No one else will so instead if getting annoyed after watching them pass it ,just take it up now.
Less cluttered stairs, less annoyed and your steps are up.
If possible first week of school term , change a £10 note in to coins and keep in car for forgotten non uniform/ bake sale/ parking fees.
If possible book school meals for the month.
If packed lunch , get enough reusable zip locks for the week ahead ,on a Saturday ( because sunday is always full of 'jobs')
pack them ,add crisps/snack bar/apple or banana etc. Just add a sandwich as needed
Only saves a few minutes but makes mornings smoother.
In summer freeze your drinks night before...cold drink and cold lunch.