Time now for some Great War era bodging. I found a sci-fi/steampunk type cannon on eBay and bought a couple hoping they'd be useful for something. After the customary period of dust-gathering I was looking at a photo of some German minenwerfers. These seemed to have been built in several different sizes so I figured that bodging such a thing was thus easier if I didn't have to worry what size the resulting model was!
Anyway, much bodging later here is the finished minenwerfer, complete with crew adapted from Armies in Plastic infantry. I think it looks sort of OK-ish.
Oh, and did I mention that it fires plastic pellets? Oh yes!