Dear ivi1981, happy birthday and all the best. Unfortunately, I don't know what you like to eat, but I hope you get what you enjoy for your birthday. Have a wonderful time and celebrate nicely.
I have a few free patterns for you here; maybe there’s something for you, even though I don’t know your preferences and had to guess.
You can’t do without a reindeer this season.
Crochet pattern for a little reindeer
How about a few hearts for leftover yarn?
Free pattern for a “little heart” crochet appliqué

Potholders are classics that you can crochet again and again.
Free crochet pattern: Retro Potholder Variation
The poncho will bring you lots of joy.
Poncho “Knobl”
There’s still time for a candy cane before Christmas.
Sweet Candy Cane - Free Crochet Pattern
The hat is chic and enjoyable to crochet.
“Spyrell” - Crochet Hat / Beanie - Free Crochet Pattern
Was there something for you?
More
free patterns.