What to get a 3yr DD who has everything

[1940s]

She has everything. I get things second hand on Facebook sites and she's the first grandchild on both sides so has lots of 'big ticket' items such as scooter, kitchen, playhouse in garden, balance bike.

What can I get her for Christmas?

Im absolutely happy keeping it super low key as I hate lots of plastic crap and buying for the sake of it (hence my careful second hand purchases!) but what are some bits that I may not thought of that she will love for Christmas?

Aquaplay water ways. Water play is amazing

My 4 year old loves:
aqua doodle
lego
duplo
wooden building blocks
magnetic tiles
her vtech camera
leapstart 3d
marble run
build a garden
instruments - usually keyboard or xylophone

I'm stuck for 'santa' presents, so far all i can think to get her is dressing up clothes as all she has is Elsa frozen 1 and frozen 2 dresses.
Anything else anyone can recommend? Not Playmobile as she has toot toot toys and barbies and doesn't play with them much

Swing/slide

My DD just had her 3rd birthday and the big hits have been Lottie dolls - particularly the fossil hunter doll, the playdoh pizza kitchen and this explorers kit that comes with working binoculars, compass, torch etc:

https://www.amazon.co.uk/dp/B07JNZ3C8D/ref=cmswwrcppapiii_6iYOFbS0DSW03

@Neighneigh

A marble run has been a great hit in our house, fir the 3yo and 10yo

Which one do you have?

I disagree with the poster who suggested an iPad.

What about a kite? Or a series of books, eg all the Paddington stories?

Or a family membership of the local zoo (if affordable) with a cuddly toy animal to open on Christmas Day?

This thread is incredible thank you so much!!
I love the idea of the parachute, dressing up rail and looking into the magnetic tiles now :)) thanks again