That's the best way to do it... Take it slow, see what you have, and don't go shopping for anything before carefully studying your travelling patterns, containers you might already have available, etc... For example, i've decided I had three patterns : daily commute (car), other car trips, and wilderness (hiking, snowshoeing, fishing).

I have a small camera-bag first-aid + PSK that travels in my messenger bag daily. I have something slightly bigger that travels in my car, and gets thrown in my backpack when I go in the wilderness... Works for me!

Hav fun doing it all! And don't be to hard on yourself, a cheap dollar-store mirror is still better than no mirror at all, etc...