Portafilter Retaining Bracket

This is a simple bracket to hold your (58mm commercial standard, tested on Rocket R58, Sunbeam E6910, etc) portafilter handles aka group head handles. 
It just aids keeping things tidy.  I use mine for my spare handle that has a blind filter in it, my single and double usually sit at the machine to keep warm.  But, I'm considering adding a second, to keep the single out of the way when I'm not using it
There's no inherent fixing options built in.  The assumption is you'll use a good double sided tape or drill some holes to screw it into place.  I have considered adding a version with a little loop so it can just hang off something, but it would need to match what it hangs off pretty closely.