That'd be awesome! I've ordered them in the Netherlands, but these are the products:
Notebook:
https://www.verhaak.nl/5-pak-schriften-a4-ruit-10mm-zwart
Sticky notes:
https://www.bol.com/nl/nl/p/post-it-super-sticky-notes-rio-76x76mm-90-vel-6-blok..
I finally finished this! It’s a bit off model, but not bad. I found a similar notebook at Daiso and just used regular Post Its. Here is a 1 min video flipping through it if you want to see: https://drive.proton.me/urls/E6P5W6RF2G#KiinkApRQt2H
Now I just need to solve it, but I think I see what I need to do.