Been doing this too! Embarrassingly I still need to refer to my washing machine manual occassionally.
It's a really useful habit!
In a similar vein, I've also got a receipt scanner app - to make sure I've got 'em saved if I need to return or service something.
Oh, I'm aware and I largely agree. I've got a nitecore Tini SS and it's both adorable and really useful.
One thing I've found extremely useful is carrying a small headlamp around - specifically a Nitecore NU20. Having hands-free lighting is so handy. Although, come to think of it, I wonder if I could modify the Tini to serve that purpose..