I sketchnote both analog and digital. For analog sketchnoting, my preferred tools are light grey paper, Flair pens, black Sharpie pens, and Zebra Mildliners. For digital sketchnoting, I use the Procreate app on an iPad Air with an Apple Pencil.
You'll notice that, unless I'm live (or semi-live) sketchnoting a chat, webinar, or blog post, I often use quotes to anchor my thinking and generate ideas for the sketchnote.