Journal Keepers - for sale but good photo of the concept

Nice little post with basic instructions

LOADS of prompts to print - you can always trim to remove the little images

Journal Jars and notebooks - includes questions

A different sort of Journal Jar - cards to print and fill in then store in the jar
Free Journal Jar kit to print

And the 2015 version is here - note that these are single card PDFs, you are meant to print a bunch of them.