I use a low-D Overton tabor pipe with my citeras (one in D, one in E) and with the bowed Crwth (concordant E & B). I've also invented a two-hole overtone pipe (Troll Pipe) which I play with the crwth drone - listen HERE. This is basically an overtone pipe with a leading note added - you can get the effect by playing a 3-hole pipe with the bottom hole & open end only.

I've got another invented instrument called a Troll Pipe in which an overtone pipe (in a very approximate F) is fitted with a bowed drone - see HERE for pics & sound sample. I might add that the mouthpiece currently on this instrument comes from the Generation Bb that features in the anecdote related HERE - so whilst in one sense I still have the whistle, it is currently in two parts until I find an alternative mouthpiece for the Troll Pipe - i.e. one from an old Camac wide-bore whistle which I know to be still lying around somewhere...

For general playing on the pipe & tabor I always use my Overton G, still going strong after nearly thirty years. You can here me playing it in the recording of Alison Gross that features HERE along with one of those inexpensive (and versatile) Darbuka's mentioned above. This was recorded last year in one of our wee sets at The Fylde, more of which this year I would imagine...