Sorry, no pictures however you can easily form one in the day-dream motif.
In the home-auto stores you can find the metal rings/hose clamps of all sizes that have a screw system to tighten them up. I find it easy to take mufflers and with some fitting, maybe a little filing, sanding or whatever make it fit close enough to get a tight fit. Pop cans make the best of gaskets, easy to work with and total accuracy is not required.
Now cut the hose clamp at where it will have two equal legs or at least close to such, bolt the legs to the side of the chosen muffler and tighten it all up. You will find many sneaky ways to make things work and the more you play around with them the better you will find just what you wanted.
Kind of like days of old when most RC mufflers were clamp-ons. Works!