Eureka coffeegrinder funnnel for 58mm portafilter by haegar33 - Thingiverse
https://www.thingiverse.com/thing:4107925
If you have an Eureka coffee grinder you know the mess outside the portafilter when grinding. This funnel helps to minimise the spill and has been designed for a 58mm portafilter. It might fit also for other mills.
Eureka Mignon Tray - Specialita / Silenzio / Perfetto by RiotMUC - Thingiverse
https://www.thingiverse.com/thing:3850272
V2: --> now locks in place, to stop it moving from the vibration!