I’ve also done some light-fast testing. Laser prints (both B&W and color) survive a long while in direct harsh sunlight left in the window of my Utah home. All types of pen I tried were faded within a couple years but Pencil survives.
A 360 degree stapler is a fantastic tool for quickly binding them.
As I store everything in a local Vikunja instance for notes and WIP, here's the list of links I assembled relative to this (hopefully useful; it includes calendar templates so that I can make them for my mother-in-law):
https://github.com/berteh/ScribusGenerator
https://wiki.scribus.net/canvas/Useful_Free_Resources
https://www.opendesktop.org/p/1106678
https://www.opendesktop.org/browse?cat=196&page=1&ord=latest
https://www.pling.com/s/Artwork/browse?cat=196&ord=latest
https://wiki.scribus.net/canvas/CalendarWizard
https://github.com/RaffertyR/Year-Calendar-Script-for-Scribu...
https://wiki.scribus.net/canvas/Category:Scripts
https://wiki.scribus.net/canvas/Making_a_photobook_from_a_di...
https://wiki.rjcalow.co.uk/photography/make/designaphotobook...
https://github.com/PPSchL/scribus-photobook-scripts
https://github.com/RaffertyR/PhotoBookTools-for-Scribus
https://forums.scribus.net/index.php?topic=4081.0
https://wiki.scribus.net/canvas/Automatic_import_of_images_f...
https://wiki.scribus.net/canvas/Photo_Albums
https://github.com/hawbox/scribus-book-templates
https://forums.scribus.net/index.php?topic=3735.0
http://johnosterhout.com/basic-book-template-for-scribus/
When you find a print shop, they'll talk about margins and bleeds, so it might be worth finding a print shop first to know what bleed zones you want on the pages and whether they expect left page first, or right page first.
Once you know that, you can set up Scribus appropriately.
I do something similar but with email and more pro-active [1]. I have created my son an email address when he was born and I'm sending him things from our lives and ask family members to to the same. Just to write them about themselves and send photos of their current homes and gardens and partners.
I imagining him looking through his email when he's 18 and reading personalize messages sent by family members who might no longer be with us then.
[1] https://blog.haschek.at/2024/leaving-a-digital-legacy.html