you will need
1. an altoids tin
2. a bunch of note cards
3. a pen

Step 1:

first you open up the altoids tin and trace the lid on 1 note card next cut it out and use it as a template and cut out like 20

Step 2:

next trim them if needed and put them into the lid and it should still be able to fit

Step 3:

you can put tabs to organize it and you still have the room in the bottom to put a small pencil and you can wrap white painters tape around it so you can put more tabs when needed. you could also put wallet sized family photos,preserved flowers or leaves,or what ever you can think of