So far

Used allen key to fix saddle on balance bike
Bruised wrist unpleasantly with allen key which kept jumping up and biting me
Fed everyone breakfast and lunch
Did two loads of laundry and got one dry
Hooked waterbutt up to downpipe
Watered garden from waterbutt, which was full and we didn't realise
Helped Astrid after Emer swung into her; Astrid's head hurt Emer's back, but Astrid ended up crying and unpleasantly floppy; she's ok now I think but it was a bit alarming. She didn't lose consciousness so I thought she must be ok.
Found things in the attic to give to people
Planted two packs of tomato seeds into seed trays
Had a visitor, yay!
Got Thames Water water-saving kit and read it, but haven't installed it yet; we want to reduce flow on the shower and the kitchen sink.
Emer did loads on the balance bike.
I need to phone T-Mobile to get paperwork for the insurance people, and hang more laundry, but this awful wrist pain is making everything much harder, because I can't think straight.
Astrid is talking an amazing amount.