Better links now that I'm not actively working:
My favorite tutorial for getting printables to look good:
https://lifeinmini.com/high-resolution-printing-miniatures/?utm_source=Pinterest&utm_medium=organic
Good old MyFroggyStuff printables (1/6 scale, but can be scaled, they are also copyright free or "frog-brand"):
https://myfroggystuff.blogspot.com/p/printables.html
AND her other technique using magazines and paper advertisements:
Quick Youtube search gave me:
Love Alphastamps for ephemera in general but they have some digital printables as well as physical sheets. Great mini store with great sales too:
https://alphastamps.net/collections/types?q=Collage+Sheets
Nonomininostalgie has several printables and tutorials, just google translate the page from French:
https://nonomininostalgie.blogspot.com/p/blog-page_3968.html
Free boxes, papers, Christmas stuff and sewing supplies:
https://dee-dawdesigns.com/downloads/
Whole page of projects, many which include printouts:
https://joannswansondiyminiatures.blogspot.com/
Site has a whole bunch of printables and projects, google translate from Finnish. She also has books that are for sale, I just don't think I can get them as an USAmerican:
https://maria-malmstrom.blogspot.com/
Artisans In Miniature (AIM) emagazine archive will have printables and tutorials:
http://www.artisansinminiature.com/photo_2.html
Mi Minimundo is in spanish (sometimes) but has TONS of tutorials in general and several printables:
https://heloise-miminimundo.blogspot.com/search/label/Imprimibles
A few holiday themed printables:
https://minifanaticus.blogspot.com/p/miniature-printables.html
French page but various food printables:
https://miniatursite.e-monsite.com/pages/imprimables/
1/6 scale breyer stuff and a great bagged salad tutorial:
https://lastalliancestudios.blogspot.com/search/label/printable
https://lastalliancestudios.blogspot.com/2019/07/diy-miniature-salad-tutorial.html
Lilliput Homes has some printables in German:
https://www.lilliput-homes.de/bastelb%C3%B6gen-mini-verpackungen-und-zubeh%C3%B6r/