After being asked for years when my information graphics would be out als posters as well, I also reworked the finger and flag alphabets and uploaded them. Large formatted posters and art prints are available via Posterlounge now (soon also on Amazon and eBay!), and smaller formats and postcards are available via Artflakes as well.
Art print for the infographics »Zweihändiges Fingeralphabet«
Art print for the infographics »Flaggen- oder Winkeralphabet«