Off the top of my head:
Child based
Planning and getting new items as needed - everything from school uniform and shoes to new bedding to gifts
School admin -
retrieving the banana stained letter about the school trip, wiping it off and signing it
Putting it in the family calendar - is there a family calendar or are you it?
Making sure there are clothes ready for mufti/world book day/other non-uniform days; yep!
organising and attending parents eves
reading report cards
Booking the time out of school for essential appointments
Sorting through outgrown items for despatch to bin, charity or for sale - not just clothes but books, toys, old electronics, games, sports equipment... I did this quarterly with dd and it was one of my most hated jobs!
Kids healthcare admin -
Making the medical appointments - inc dentist and glasses if needed - and ensuring dc attend
Taking kids to gp when they're ill
Collecting prescriptions and medical items like glasses
Ensuring repeat prescriptions are ordered
Booking haircuts and ensuring child attends
Kids social lives
Birthday parties - ensuring rsvp, if they're going sorting card and gift inc wrapping and writing out card/getting child to write out card
Play dates organisation
Keeping on top of admin for clubs and hobbies
Household
Balancing the budget
Checking bank accounts that no faulty or dodgy transactions have occurred
Shopping around for insurances and haggling
Shopping around for best deals on bills
Car maintenance and associated admin (mot, tax, servicing booked)
Keeping an eye on 1st aid stocks and replenishing as needed
Keeping an eye on emergency stocks and replenishing when needed (where I live power cuts in winter so things like torches, candles and matches, batteries but everyone has their own "thing" they need to be prepared for)
Family admin
Greetings cards for relatives at appropriate times planned and sent in time ditto gifts inc planning gifts
Planning Christmas - yep! That's a biggie!
Planning, booking and prepping for holidays, ensuring passports and insurance etc all covered and up to date, booking transport to destination or at least airport, ensuring all items that will be packed are suitable and will fit in the cases! Catching up on the laundry to facilitate this!
Organising if the family are attending a christening/wedding - time off work and school, outfits, cards, gifts...
Making you write lists of tasks because he can't be arsed to think of what needs doing himself?
yep!
Love an excel sheet 
Dealing with consumer complaint issues - returning faulty items, getting refunds, phoning up the car insurance when they've double charged you... that kinda thing takes bloody ages to sort!
All these folk who say "ah but it only takes 5 mins" for all the jobs are MASSIVELY oversimplifying
Totally agree!
Plus it's a lot of "only 5 min" jobs and just 12 = 1 hour of work
The ones on others lists I haven't included doesn't mean I don't think they count but trying not to be too repetitive
Pet care and admin too, i don't have pets but I notice friends who do constantly having to keep on top of vaccinations, worming etc plus pet insurance
@karmakameleon I like your style!
Teaching your DC to do a couple of these tasks and overseeing them doing them until they get it (could take ages!)
Yes! Another biggie depending on the task! I have a photo of dd making fairy cakes on her own the first time - kitchen is a BOMBSITE there's literally flour on the ceiling and she's head to foot in it
she thought I'd be cleaning up! Er no! But I had to supervise her and ensure she cleaned up properly (ok I helped a bit) mishaps learning to do laundry without shrinking/dying everything too!
Finishing stuff. DH will clean the toilet till you could safely eat your dinner off it, but doesn't seem to notice that the toilet roll needs topping up and the hand towel needs changing
Oh god yes! Ex used to do this half arsing a job but trying to make it appear he hasn't! His thing was washing the dishes and pans and cooker - they'd be spotless and dried and put away BUT he didn't clean down the counters!
but I bet she didn't have to spend half an hour running round the house checking all the fittings for model numbers and scrolling through amazon working out which ones to buy to fit
Omg! Yes!
My last flat ALL the fittings were sodding IKEA! There isn't a Fucking IKEA within 50 miles! They only took IKEA bulbs so I'd do a once a year trip and stock up but even "just" changing the bulbs was a fart and a half cos every room the bulbs went in a different method! When I moved here even though normal light fittings not all rooms same (some bayonet, some screw in) and the power levels differ so now I have it all on a bloody memo on the phone!! I mean wtf!
Finding places to store every damn thing, keeping those places vaguely tidy,
That's so funny I nearly started a thread about that! My flat is shit for storage so I've had to work out what goes where and how and I'm pretty sure it wouldn't be obvious to someone else but it's what I've worked out after living here a few years - eg x Tupperware can't go in y cupboard as it's just a little too big and the cupboard door won't close type things
Also so you know where shit is when you need it!
I've taken to learning that if I had trouble finding a thing in future where possible put it the first place I looked as that's where my brain thinks it is!
To the pp on batteries... I raise you CHARGING devices/wireless phones/toothbrushes/rechargeable batteries etc!!! yes!
Takes the rubbish out but not put a new bag in the bin ex did this too SO annoying!
making sure that the baby change bag has everything it should have in
Ex and I once had a HUGE row about this one as he took an essential item out instead of exhausting himself by going upstairs to get it from baby's room AND NOT PUTTING IT BACK so next time I took baby out I got caught out! So I made sure next time he took baby out he was similarly caught out (except not the thing was there but I hid it till he called me about it) - he learned the lesson! Dick!
Finder Of All The Missing Things. Presumably the uterus is some kind of homing device
Yes with ex and dd I just resorted to "i don't know where YOU left it LOOK!"
booking babysitters
After the SHOCKING replies on another thread I'm gonna say "booking a SUITABLE babysitter" not one you barely know yourself, who's never met the kids last minute!
He was really surprised at what a faff it was to get a sitter!
See!!
My dd is 20 and has left home to study I'm still:
Counsellor/therapist
Accounting adviser
Prompter for medical updates (she has a disability which involves regular check ups and orthotics which need replaced periodically and specialist spectacles. She is still somewhat in denial and needs reminding)
Personal tutor (I swear I should get a certificate for her course after the past year!)
Cheerleader
Sounding board for off the wall ideas
I love her to bits but wow it never ends...
Then I think and realise I'm nearly 50 and my mum still listens to and guides me, and reminds me of shit I need to do healthwise!
This is one of those threads makes me glad to be single though as even though I had to do it all I only had to do it for dd and I and not another adult!