So ... I'm interested, do we have any people here playing medieval (or "medieval-style" - I'll get to that in a sec) instruments?
Myself, I play bagpipes. The modern, re-created medieval-style german bagpipes, to be precise. I seriously have no idea if they have a specific name in english ... But they look sort of like this - this one's the set I'm currently playing, although it doesn't belong to me but Mario Siegismund, the guy who built it for the movie adaptation of Noah Gordon's "The Physician" (He lent it to me for a time while he builds me my own set). This kind of bagpipe is not actually historically accurate since it was a relatively recent (and fairly liberal) re-creation within the modern medieval scene in germany - but the one I'm playing is made specifically to look like what bagpipes could possibly have looked like back then (as far as I'm aware, no actual bagpipes survived from the medieval era - sadly). They may sound very differently, though, and are related to the scottish great highland bagpipes (which, many people don't realize, are by far not the only kind of bagpipe, neither any traditional kind, as there are others that are much older - the scottish GHB is actually a fairly recent development) as far as the inner workings go (as well as the volume ... ).
Aside from that I also play a set of german smallpipes commonly known as Hümmelchen, albeit a heavily modified one (actually uses more air than the big one, and is almost as large) that was built by my bandmate, with help from yours truly.
Other instruments I play include tin whistles, low whistles and ocarinas.