These scale pretty well with 1/32 minis (I think the cannon on the left below is AiP).
You can often find unusual but helpful gaming stuff in the pencil sharpener section of eBay (e.g., most of my 28mm wild west wagons were pencil sharpeners).
Above you can see the sharpener that is built into the base. The only change required is gluing a bit of card in place below the barrel to cover the opening. These sharpeners also shoot matchsticks (or did--I doubt they operate now!).
Once set among figures, they look the part. I paid about $20 for three, which was a deal.
Up next: I have two groups of 54mm British AWI guards underway plus some 28mm furniture and some HO-scale garbage dumpsters.