Maybe you don't want to shell out a heap of cash for real bagpipes.
Or maybe you just want to make a trash-bag instrument.
Whatever the reason, I'm not here to judge you or what DIY projects you jury-rig in your spare time. Source your bag and recorder and head on over to this 2009 Instructables tutorial to learn how to make your own bagpipe-like device today. (Spoiler alert: It won't sound like a real set of bagpipes.)