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

Question

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!