Ten Ideas for my New Notebook

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Today I bought a new notebook.
I intend to carry it everywhere I go — together with at least one pencil.
Here are ten ideas of what to write in it:
1. Ideas
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They may or may not make it on an idea list
2. To-Dos
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Any to-do that is not work-related
3. Gratitude
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Reflecting on what I feel grateful for
4. Observations
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Record a tiny sliver of reality
5. Dreams
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Jot down an interesting dream
6. Quotes
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A Quote can come from anywhere
7. Kindness
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Plotting random acts of kindness
8. Drawing
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My notebook has no lines: freedom to draw
9. Programming
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But strictly for fun..
10. Poems
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Channeling my inner poet
11. Philosophizing
12. Solving math problems
13. Reflecting on meditation sessions
14. Writing blog post drafts
15. Writing down principles
16. Writing down promises
17. Journaling
18. Letting strangers write down a secret — weird but cool?
19. Letting friends write whatever they want
20. Writing down someone's contact information — who needs a phone anyways?