I've added these for sale (as downloadable PDFs) on my Etsy shop as well:
https://www.etsy.com/shop/MichelleDobrinArt?section_id=10423993&ref=shopsection_leftnav_1
More notecard designs have come out of this doodling phase too.
And again, some of them are posted on my Etsy site:
https://www.etsy.com/shop/MichelleDobrinArt?section_id=10423993&ref=shopsection_leftnav_1