DIY Advent Calendar fillings - suggestions please!

[FiddleFigs]

I'm making an advent calendar for nearly 4 year old DD this year (little numbered paper bags, hanging off some baker's twine - very twee). I'm planning on filling half of it with bits from last years Playmobil advent calendar (she won't remember, and it's probably the last year I can get away with things like this!). I've also got some hair clips, temporary tattoos, stickers and a Mr Men book. Any suggestions for other fillings (besides chocolate or sweets)?

[Leeds2]

Bubbles.
Model farm animals or dinosaurs.
Notepad and pencil.
Packet of chalks.
Key ring to fix on her nursery bag.
Can't think what they are called, but one of those animals that sit on top of a suction cup, which sits on top of a spring. Push it down, and wait for it to jump.
Bouncy ball.
Unblown up balloon.
Christmas badge.

[SpongeBobJudgeyPants]

Not sure of the age on the packaging, but The Works have a build your own snowman kit. I've bought it for DH (55)

[Allthepinkunicorns]

Lego figures
Money
Craft bits and bobs
Crayons
Blind bags
Christmas socks
Colouring sheets printed of the internet
Bath stuff

[AdaColeman]

Cut up a couple of postcards into simple jigsaw shapes, works best if the postcards are obviously different.

Or get a simple Christmas jigsaw and include a few pieces each day.

Christmas cake decorations, so she can help you with the cake, or holly or star shaped cookie cutter so you can make cookies together.

A marzipan mouse.