If your room has an specific aesthetic or them you can make it following that vibe.
Scrapbooking calendar
Notes
You can make it on canva or handmade. It's nice if you follow a theme
Paint a vinyl
Notes
Just choose a design you like and paint it!
Make your own posters
Notes
Just choose a design you like, draw it and paint it with the technique you want! I do mines with acrylics or with Sharpies
Avoiding my phone
Paper mosaic
Notes
If you put in a picture frame can work as a gift or just as a decoration. Just grab papers of all colors and textures you can find and create a beautiful piece of art!
Origami
Notes
It can be a bit stressful and requires concentration and patience. But it's fun too
paper collage
Reading and books
Bookmarks
Notes
I thought some of them can be according to the book you're reading, for instance make one bookmark for each harry potter book