Mine are 11 and 13.6 and we do the C,E,H . There's loads of "Why make an extra day of presents/they don't need more presents/ what next- Boxing Day Hampers" killjoy type comments regarding CEH, but mine love them.
You need a box. I but a lovely Christmas box from Homesense/ TKMax because my DD keeps them to reuse.
But this year I might get a banana box (each) from Costco and cover with Christmas paper, wrapped in Cellophane.
PJs (Primark Fleecy ones), They do some lovely festive ones.
Slippers
Dressing Gown
(Things that I'd buy at some points in the year)
I do a Kilner Jar of sweets (buy some each time I go shopping) my DS isn't a chocolate fan.
An annual (lots of BOGOF)
Bath bomb - Lush , Your DD might like them. They do a bottle of bathfoam (Snow Fairy or something). I bought a wand with the bathbomb star at the top, to run under the taps.
New festive mug. Sachet of hot chocolate. Small packet of biscuits.
You could add a new fancy toothbrush?
Reindeer Food (sugar mixed with food colour, oats and edible glitter). Sprinkle on the lawn.
DVDs- can't think of many off the top of my head for a 3yo.
Mine watched Tweenies and Barney Christmas at 3yo
The Snowman will be on anyway.
Your CEH needs to be "left" for them (you could ask a neighbour to ring the doorbell and the CEH will be delivered to the porch)
I put mine in front of the fireplace before we go for a Christmas Eve walk. I "check the back door is locked" while I put them out.
Of course mine know exactly what's going on now 