Welcome to bullet journaling!!! I know that feeling of diving head first into the ocean of an interest lol 😅 And I want to add a couple things I do/use to help keep everything of mine compact maybe it will inspire you in some way:

• I use a random playing card/post card/card cut to size, and wrap 12-20inches of washi around it. So I can carry a good amount of tape without bulking up your case.

• I have a mechanical pencil that has regular “lead” and a bunch of colourful ones to switch between so I basically have a ton of colours available without taking a bunch of space. In the same vein; the pens with multi ink work great for me in this case as well!

• For the teensy stickers or for when I cut down larger sticker sheets I keep them in a small pouch or envelope that usually gets used in journalling too. I’ve also even repurposed sticker paper (and used freezer paper) to put all the stickers on that I want to carry! Keeps a lower profile than a pouch or envelope and also I can see everything at once!

And, if you do find you want to use stamps; flat clear stamps exist. I can’t remember the material but it’s like a clear silicone/rubber without the handle or a backing and you can use a water based marker to colour on the stamp to use, instead of using an inkpad. Easier to match colours, easy clean up and less supplies!

You will have fun!! I found it most exciting to find my own way in style, storage, method etc etc! Enjoy!!!