All the pens!!! I have a lot of Faber Castell PITT Artist Pens. And just recently bought a set of Micron pens. Both of these brands are waterproof, so I like using them to do lettering or illustrations when I’m going to do watercolors on top. That way I don’t have to worry about it bleeding or getting smeared.
I’m often asked about my favorite (or most used) supplies for bible journaling. I use lots of different things, so it took some time to condense it into a reasonable lineup. Please don’t see this as a “must have” list. Bible journaling, like any form of art or worship, is a very personal thing. You be you.