I uploaded a new set of artworks to have greeting cards ready on my Redbubble shop. You can still get them before the 25, worldwide delivery (and I get 20% off the sale 😁 so thank you for your support!):
If you want to print them with your own hardware or as a product for your company, you can ☺️. You'll find the source and licenses of the artwork in high resolution here: https://www.peppercarrot.com/en/artworks/artworks.html (check the "Source Explorer" and the category "Misc", "Wallpaper", "Artworks", "Shop"; all the artworks are categorised here).