It's only a small selection currently as I just made a few for my own notes but I'll add to it occasionally as I make more.
I'm sharing these under an attribution, share alike, Creative Commons Licence; so use and edit them however you like just provide credit to me (Finbah Neill https://twitter.com/finbahneill) and release anything you make from them under the same licence.
And I'd love to see what you do with them.
Creative Commons - Attribution-ShareAlike 4.0 International - CC BY-SA 4.0
If you just stumbled across this and don't know what Notion is, this is it, you're on a Notion page right now!
If you signup to Notion via this link, both you and I get credit towards our notion plans. It's a neat way to support me if you found these icons useful.
The all-in-one workspace for your notes, tasks, wikis, and databases - Notion
Zip files containing all the icons in colour and monochromatic variants.
280x280px transparent .png files. This is the Notion recommended icon size and format.
140x140px transparent .png files. Use these if you notice an impact on load times and performance using the 280px pngs.
Vector .svg files. Note that while these are supported icon format for Notion they do slow down performance, particularly on the mobile app.