How do I make a fake typewritten page and a fake medieval manuscript page? [duplicate]

Okay, I am typesetting something where there is snippets from something that is typewritten and something that is a medieval manuscript. Naturally, I think it would be funny to mimic those looks. Here's what I have so far:

\documentclass{memoir}
\usepackage[T1]{fontenc}
\usepackage{aurical}
\usepackage{mdframed}
\definecolor{light-gray}{gray}{0.95}

% The environments

%% Typewriter page
\newenvironment{ttenv}
{\begin{mdframed}[innerleftmargin=1.5cm,innerrightmargin=1.5cm,innertopmargin=2em,backgroundcolor=light-gray]\ttfamily}
{\vspace{2em}\par\end{mdframed}}

%% Ancient manuscript
\newenvironment{sigsand}
{\begin{mdframed}[innerleftmargin=1.5cm,innerrightmargin=1.5cm,innertopmargin=1em,backgroundcolor=light-gray]\Fontauri}
{\vspace{2em}\par\end{mdframed}}

\begin{document}

\begin{ttenv}
This is the faux typewriter page!
\end{ttenv}

\begin{sigsand}
This is the faux ancient manuscript page!
\end{sigsand}

\end{document}


The results are not horrible:

... but I sure feel they could be better. My questions are:

• How can I make the writing was a bit uneven, especially for the "manuscript"? - How can I make the pages appear less flat?
• How can I make the edges of the "papers" a little jagged, especially for the "manuscript" one?

I'm open for ideas, also!

• Sorry, but a medieval manuscript would not look anything like that. It wouldn't be less even, but more so and, probably, richly illustrated, too. And it wouldn't be on paper and it wouldn't be in modern English. And I'm not sure exclamation marks existed then, either. There are already questions about everything you actually say you want, though.
– cfr
Dec 8 '17 at 2:37
• I am well aware what medieval manuscripts looks like, "something that evokes" them would probably be a better wording. It should of course be easily readable to modern audiences. Dec 8 '17 at 2:39
• I didn't think it would be news. But nothing there would be even vaguely associated with a medieval manuscript for me. It just looks like untidy writing, which isn't what I associate with such manuscripts at all.
– cfr
Dec 8 '17 at 2:42
• To make the undulating font I mentioned more readable to contemporary eyes, you can use the last technique in tex.stackexchange.com/a/315635 (for luatex only). Peter Baker (of Junicode fame) also created Eadui, which is both very readable and equipped with ornamental capitals (there’s an example showing how to use the capitals at tex.stackexchange.com/a/235760). Dec 8 '17 at 3:40